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path: root/drivers/usb/storage/alauda.c
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Diffstat (limited to 'drivers/usb/storage/alauda.c')
-rw-r--r--drivers/usb/storage/alauda.c54
1 files changed, 26 insertions, 28 deletions
diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c
index 878b4b8761f5..e01f3a42bde4 100644
--- a/drivers/usb/storage/alauda.c
+++ b/drivers/usb/storage/alauda.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for Alauda-based card readers
*
@@ -15,20 +16,6 @@
* (very old) vendor-supplied GPL sma03 driver.
*
* For protocol info, see http://alauda.sourceforge.net
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
@@ -49,6 +36,7 @@
MODULE_DESCRIPTION("Driver for Alauda-based card readers");
MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>");
MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("USB_STORAGE");
/*
* Status bytes
@@ -117,6 +105,8 @@ struct alauda_info {
unsigned char sense_key;
unsigned long sense_asc; /* additional sense code */
unsigned long sense_ascq; /* additional sense code qualifier */
+
+ bool media_initialized;
};
#define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
@@ -142,7 +132,7 @@ static int init_alauda(struct us_data *us);
{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
.driver_info = (flags) }
-static struct usb_device_id alauda_usb_ids[] = {
+static const struct usb_device_id alauda_usb_ids[] = {
# include "unusual_alauda.h"
{ } /* Terminating entry */
};
@@ -164,7 +154,7 @@ MODULE_DEVICE_TABLE(usb, alauda_usb_ids);
.initFunction = init_function, \
}
-static struct us_unusual_dev alauda_unusual_dev_list[] = {
+static const struct us_unusual_dev alauda_unusual_dev_list[] = {
# include "unusual_alauda.h"
{ } /* Terminating entry */
};
@@ -184,7 +174,7 @@ struct alauda_card_info {
unsigned char zoneshift; /* 1<<zs blocks per zone */
};
-static struct alauda_card_info alauda_card_ids[] = {
+static const struct alauda_card_info alauda_card_ids[] = {
/* NAND flash */
{ 0x6e, 20, 8, 4, 8}, /* 1 MB */
{ 0xe8, 20, 8, 4, 8}, /* 1 MB */
@@ -210,7 +200,7 @@ static struct alauda_card_info alauda_card_ids[] = {
{ 0,}
};
-static struct alauda_card_info *alauda_card_find_id(unsigned char id)
+static const struct alauda_card_info *alauda_card_find_id(unsigned char id)
{
int i;
@@ -330,7 +320,8 @@ static int alauda_get_media_status(struct us_data *us, unsigned char *data)
rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe,
command, 0xc0, 0, 1, data, 2);
- usb_stor_dbg(us, "Media status %02X %02X\n", data[0], data[1]);
+ if (rc == USB_STOR_XFER_GOOD)
+ usb_stor_dbg(us, "Media status %02X %02X\n", data[0], data[1]);
return rc;
}
@@ -392,7 +383,7 @@ static int alauda_init_media(struct us_data *us)
{
unsigned char *data = us->iobuf;
int ready = 0;
- struct alauda_card_info *media_info;
+ const struct alauda_card_info *media_info;
unsigned int num_zones;
while (ready == 0) {
@@ -450,6 +441,8 @@ static int alauda_init_media(struct us_data *us)
+ MEDIA_INFO(us).blockshift + MEDIA_INFO(us).pageshift);
MEDIA_INFO(us).pba_to_lba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO);
MEDIA_INFO(us).lba_to_pba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO);
+ if (MEDIA_INFO(us).pba_to_lba == NULL || MEDIA_INFO(us).lba_to_pba == NULL)
+ return USB_STOR_TRANSPORT_ERROR;
if (alauda_reset_media(us) != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
@@ -464,10 +457,14 @@ static int alauda_init_media(struct us_data *us)
static int alauda_check_media(struct us_data *us)
{
struct alauda_info *info = (struct alauda_info *) us->extra;
- unsigned char status[2];
+ unsigned char *status = us->iobuf;
int rc;
rc = alauda_get_media_status(us, status);
+ if (rc != USB_STOR_XFER_GOOD) {
+ status[0] = 0xF0; /* Pretend there's no media */
+ status[1] = 0;
+ }
/* Check for no media or door open */
if ((status[0] & 0x80) || ((status[0] & 0x1F) == 0x10)
@@ -481,11 +478,12 @@ static int alauda_check_media(struct us_data *us)
}
/* Check for media change */
- if (status[0] & 0x08) {
+ if (status[0] & 0x08 || !info->media_initialized) {
usb_stor_dbg(us, "Media change detected\n");
alauda_free_maps(&MEDIA_INFO(us));
- alauda_init_media(us);
-
+ rc = alauda_init_media(us);
+ if (rc == USB_STOR_TRANSPORT_GOOD)
+ info->media_initialized = true;
info->sense_key = UNIT_ATTENTION;
info->sense_asc = 0x28;
info->sense_ascq = 0x00;
@@ -1038,7 +1036,7 @@ static int alauda_write_data(struct us_data *us, unsigned long address,
* We also need a temporary block buffer, where we read in the old data,
* overwrite parts with the new data, and manipulate the redundancy data
*/
- blockbuffer = kmalloc((pagesize + 64) * blocksize, GFP_NOIO);
+ blockbuffer = kmalloc_array(pagesize + 64, blocksize, GFP_NOIO);
if (!blockbuffer) {
kfree(buffer);
return USB_STOR_TRANSPORT_ERROR;
@@ -1117,7 +1115,7 @@ static int init_alauda(struct us_data *us)
us->extra = kzalloc(sizeof(struct alauda_info), GFP_NOIO);
if (!us->extra)
- return USB_STOR_TRANSPORT_ERROR;
+ return -ENOMEM;
info = (struct alauda_info *) us->extra;
us->extra_destructor = alauda_info_destructor;
@@ -1126,7 +1124,7 @@ static int init_alauda(struct us_data *us)
altsetting->endpoint[0].desc.bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK);
- return USB_STOR_TRANSPORT_GOOD;
+ return 0;
}
static int alauda_transport(struct scsi_cmnd *srb, struct us_data *us)
@@ -1134,7 +1132,7 @@ static int alauda_transport(struct scsi_cmnd *srb, struct us_data *us)
int rc;
struct alauda_info *info = (struct alauda_info *) us->extra;
unsigned char *ptr = us->iobuf;
- static unsigned char inquiry_response[36] = {
+ static const unsigned char inquiry_response[36] = {
0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
};
generated by cgit (git 2.34.1) at 2025-12-25 06:23:31 +0000