diff options
| author | Mark Brown <broonie@kernel.org> | 2022-05-11 19:48:07 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-05-11 19:48:07 +0100 |
| commit | d5efbfc5210cc7ce8e413278da0dc4b7ccbe5bb7 (patch) | |
| tree | 723be8852798ef09e5e9b253fc9efbba75917fe2 /drivers/spi/spi-mem.c | |
| parent | 0d8688298d6a43f2e187dad1e45871248123764f (diff) | |
| parent | ae16cc18f37bcdea7d4ef57a5e526a60b09a1506 (diff) | |
spi: stm32-qspi: flags management fixes
Merge series from patrice.chotard@foss.st.com <patrice.chotard@foss.st.com>
Patrice Chotard <patrice.chotard@foss.st.com>:
From: Patrice Chotard <patrice.chotard@foss.st.com>
This series update flags management in the following cases:
- In APM mode, don't take care of TCF and TEF flags
- Always check TCF flag in stm32_qspi_wait_cmd()
- Don't check BUSY flag when sending new command
Diffstat (limited to 'drivers/spi/spi-mem.c')
| -rw-r--r-- | drivers/spi/spi-mem.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 7d7091aa0c22..e8de4f5017cd 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -10,6 +10,7 @@ #include <linux/pm_runtime.h> #include <linux/spi/spi.h> #include <linux/spi/spi-mem.h> +#include <linux/sched/task_stack.h> #include "internals.h" @@ -211,6 +212,15 @@ static int spi_mem_check_op(const struct spi_mem_op *op) !spi_mem_buswidth_is_valid(op->data.buswidth)) return -EINVAL; + /* Buffers must be DMA-able. */ + if (WARN_ON_ONCE(op->data.dir == SPI_MEM_DATA_IN && + object_is_on_stack(op->data.buf.in))) + return -EINVAL; + + if (WARN_ON_ONCE(op->data.dir == SPI_MEM_DATA_OUT && + object_is_on_stack(op->data.buf.out))) + return -EINVAL; + return 0; } |