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path: root/drivers/mtd
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2020-03-23mtd: spi-nor: controllers: aspeed-smc: Replace zero-length array with ↵Gustavo A. R. Silva
flexible-array member The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-23mtd: spi-nor: Clear WEL bit when erase or program errors occurTudor Ambarus
When an Erase or Program error occurs on a spansion/cypress or a micron flash, the WEL bit remains set to one and should be cleared with a WRDI command in order to protect against inadvertent writes that can possible corrupt the contents of the memory. Winbond, macronix, gd, etc., do not support the E_ERR and P_ERR bits in the Status Register and always clear the WEL bit regardless of the outcome of the erase or page program operation (ex w25q40bw, MX25L25635E). Issue a WRDI command when erase or page program errors occur. Reported-by: John Garry <john.garry@huawei.com> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Tested-by: John Garry <john.garry@huawei.com>
2020-03-17mtd: spi-nor: Trim what is exposed in spi-nor.hTudor Ambarus
The SPI NOR controllers drivers must not be able to use structures that are meant just for the SPI NOR core. struct spi_nor_flash_parameter is filled at run-time with info gathered from flash_info, manufacturer and sfdp data. struct spi_nor_flash_parameter should be opaque to the SPI NOR controller drivers, make sure it is. spi_nor_option_flags, spi_nor_read_command, spi_nor_pp_command, spi_nor_read_command_index and spi_nor_pp_command_index are defined for the core use, make sure they are opaque to the SPI NOR controller drivers. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-17mtd: spi-nor: Drop the MFR definitionsTudor Ambarus
Cross manufacturer code is unlikely and discouraged, get rid of the MFR definitions. Suggested-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
2020-03-17mtd: spi-nor: Get rid of the now empty spi_nor_ids[] tableBoris Brezillon
All entries have been moved to manufacturer drivers. Get rid of this empty table. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-17mtd: spi-nor: Move XMC bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for XMC chips, and move the XMC definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Xilinx bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Xilinx chips, and move the Xilinx definitions outside of core.c. While at it, remove the SPI_S3AN flag which is now useless. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Catalyst bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Catalyst chips, and move the Catalyst definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Winbond bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Winbond chips, and move the Winbond definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move SST bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for SST chips, and move the SST definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Spansion bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Spansion chips, and move the Spansion definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Micron/ST bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Micron/ST chips, and move the Micron/ST definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Macronix bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Macronix chips, and move the Macronix definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Tested-by: Xiang Chen <chenxiang66@hisilicon.com>
2020-03-17mtd: spi-nor: Move ISSI bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for ISSI chips, and move the ISSI definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Intel bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Intel chips, and move the Intel definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-03-17mtd: spi-nor: Move GigaDevice bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for GigaDevice chips, and move the GigaDevice definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Fujitsu bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Fujitsu chips, and move the Fujitsu definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Everspin bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Everspin chips, and move the Everspin definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move ESMT bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for ESMT chips, and move the ESMT definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Eon bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Eon chips, and move the Eon definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Move Atmel bits out of core.cBoris Brezillon
Create a SPI NOR manufacturer driver for Atmel chips, and move the Atmel definitions outside of core.c. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-03-17mtd: spi-nor: Add the concept of SPI NOR manufacturer driverBoris Brezillon
Declare a spi_nor_manufacturer struct and add basic building blocks to move manufacturer specific code outside of the core. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-17mtd: spi-nor: Expose stuctures and functions to manufacturer driversBoris Brezillon
Expose the flash_info struct and some function prototypes that will be used by manufacturers. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Move SFDP logic out of the coreTudor Ambarus
It makes the core file a bit smaller and provides better separation between the SFDP parsing and core logic. Keep the core.h and sfdp.h definitions private in drivers/mtd/spi-nor/. Both expose just the definitions that are required by the core and manufacturer drivers. None of the SPI NOR controller drivers should include them. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Prepare core / manufacturer code splitBoris Brezillon
Move all SPI NOR controller drivers to a controllers/ sub-directory so that we only have SPI NOR related source files under drivers/mtd/spi-nor/. Rename spi-nor.c into core.c, we are about to split this file in multiple source files (one per manufacturer, plus one for the SFDP parsing logic). Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Emphasise which is the generic set_4byte_addr_mode() methodTudor Ambarus
Rename (*set_4byte)() to (*set_4byte_addr_mode)() for a better differentiation between the 4 byte address mode and opcodes. Rename macronix_set_4byte() to spi_nor_set_4byte_addr_mode(), it will be the only 4 byte address mode method exposed to the manufacturer drivers. Here's how the manufacturers enter and exit the 4 byte address mode: - eon, gidadevice, issi, macronix, xmc use EN4B/EX4B - micron-st needs WEN. st_micron_set_4byte_addr_mode() will become a private method, as they are the only ones that need WEN before the EN4B/EX4B commands. - newer spansion have a 4BAM opcode (this translates to a new, public command). Older spansion flashes use the BRWR command (legacy in core.c -> spansion_set_4byte_addr_mode()) - winbond's method is hackish and may be reason for just a flash fixup hook -> private method Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-16mtd: spi-nor: Stop prefixing generic functions with a manufacturer nameBoris Brezillon
Replace the manufacturer prefix by something describing more precisely what those functions do. Signed-off-by: Boris Brezillon <bbrezillon@kernel.org> [tudor.ambarus@microchip.com: prepend spi_nor_ to all modified methods.] Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-03-13Merge tag 'mtk-mtd-spi-move' into spi-nor/nextTudor Ambarus
spi: Rewrite mtk-quadspi spi-nor driver with spi-mem This patchset from Chuanhong Guo <gch981213@gmail.com> adds a spi-mem driver for Mediatek SPI-NOR controller, which already has limited support by mtk-quadspi. This new driver can make use of full quadspi capability of this controller. The mtk-quadspi driver is replaced by the new spi-mtk-nor driver. Merge it in spi-nor/next to avoid conflicts during the release cycle.
2020-03-12mtd: spinand: micron: Add new Micron SPI NAND devices with multiple diesShivamurthy Shastri
Add device table for new Micron SPI NAND devices, which have multiple dies. Also, enable support to select the dies. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-7-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Add M70A series Micron SPI NAND devicesShivamurthy Shastri
Add device table for M70A series Micron SPI NAND devices. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-6-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: identify SPI NAND device with Continuous Read modeShivamurthy Shastri
Add SPINAND_HAS_CR_FEAT_BIT flag to identify the SPI NAND device with the Continuous Read mode. Some of the Micron SPI NAND devices have the "Continuous Read" feature enabled by default, which does not fit the subsystem needs. In this mode, the READ CACHE command doesn't require the starting column address. The device always output the data starting from the first column of the cache register, and once the end of the cache register reached, the data output continues through the next page. With the continuous read mode, it is possible to read out the entire block using a single READ command, and once the end of the block reached, the output pins become High-Z state. However, during this mode the read command doesn't output the OOB area. Hence, we disable the feature at probe time. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-5-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Add new Micron SPI NAND devicesShivamurthy Shastri
Add device table for M79A and M78A series Micron SPI NAND devices. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-4-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGDShivamurthy Shastri
Add the SPI NAND device MT29F2G01ABAGD series number, size and voltage details as a comment. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-3-sshivamurthy@micron.com
2020-03-12mtd: spinand: micron: Generalize the OOB layout structure and function namesShivamurthy Shastri
In order to add new Micron SPI NAND devices, we generalized the OOB layout structure and function names. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200311175735.2007-2-sshivamurthy@micron.com
2020-03-11mtd: spi-nor: remove mtk-quadspi driverChuanhong Guo
This driver is superseded by the new spi-mtk-nor driver. Signed-off-by: Chuanhong Guo <gch981213@gmail.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200306085052.28258-5-gch981213@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-11mtd: rawnand: brcmnand: Add support for flash-edu for dma transfersKamal Dasu
Legacy mips soc platforms that have controller v5.0 and 6.0 use flash-edu block for dma transfers. This change adds support for nand dma transfers using the EDU block. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200122213313.35820-4-kdasu.kdev@gmail.com
2020-03-11mtd: rawnand: cadence: reinit completion before executing a new commandPiotr Sroka
Reing the completion object before executing CDMA command to make sure the 'done' flag is OK. Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem") Cc: stable@vger.kernel.org Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-4-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: cadence: change bad block marker sizePiotr Sroka
Increase bad block marker size from one byte to two bytes. Bad block marker is handled by skip bytes feature of HPNFC. Controller expects this value to be an even number. Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem") Cc: stable@vger.kernel.org Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-3-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: cadence: fix the calculation of the avaialble OOB sizePiotr Sroka
The value of cdns_chip->sector_count is not known at the moment of the derivation of ecc_size, leading to a zero value. Fix this by assigning ecc_size later in the code. Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem") Cc: stable@vger.kernel.org Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-2-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: cadence: get meta data size from registersPiotr Sroka
Add checking size of BCH meta data size in capabilities registers instead of using fixed value. BCH meta data is used to keep data from NAND flash OOB area. Signed-off-by: Piotr Sroka <piotrs@cadence.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1581328530-29966-1-git-send-email-piotrs@cadence.com
2020-03-11mtd: rawnand: Macronix: Add support for block protectionMason Yang
Macronix AC/AD series support using SET_FEATURES to change block protection and unprotection. Block protection support can be checked with GET_FEATURES. Signed-off-by: Mason Yang <masonccyang@mxic.com.tw> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1583220084-10890-3-git-send-email-masonccyang@mxic.com.tw
2020-03-11mtd: rawnand: Add support for manufacturer specific lock/unlock operationMason Yang
Add nand_lock() & nand_unlock() for manufacturer specific lock & unlock operation while the device supports Block Portection function. Signed-off-by: Mason Yang <masonccyang@mxic.com.tw> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/1583220084-10890-2-git-send-email-masonccyang@mxic.com.tw
2020-03-11mtd: rawnand: ingenic: Add dependency on MIPS || COMPILE_TESTPaul Cercueil
This driver has no arch-specific instructions but is only ever useful on MIPS; so disable this driver if we're not compiling for MIPS, unless the driver is compile-tested. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200302184509.10666-1-paul@crapouillou.net
2020-03-11mtd: rawnand: stm32_fmc2: Use dma_request_chan() instead ↵Peter Ujfalusi
dma_request_slave_channel() dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly and inform user of error in case the DMA request failed. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-8-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: qcom: Use dma_request_chan() instead dma_request_slave_channel()Peter Ujfalusi
dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly to return the real error code. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-7-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: qcom: Release resources on failure within qcom_nandc_alloc()Peter Ujfalusi
In case when DMA channel request or alloc_bam_transaction() fails, dma_unmap_single() and any channels already requested should be released. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-6-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: sunxi: Use dma_request_chan() instead dma_request_slave_channel()Peter Ujfalusi
dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. By using dma_request_chan() directly the driver can support deferred probing against DMA. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-5-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: marvell: Use dma_request_chan() instead ↵Peter Ujfalusi
dma_request_slave_channel() dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly to return the real error code. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-4-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: marvell: Release DMA channel on errorPeter Ujfalusi
Release the DMA channel on errors after the channel has been successfully requested. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-3-peter.ujfalusi@ti.com
2020-03-11mtd: rawnand: gpmi: Use dma_request_chan() instead dma_request_slave_channel()Peter Ujfalusi
dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. Use using dma_request_chan() directly to return the real error code. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200227123749.24064-2-peter.ujfalusi@ti.com
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