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path: root/drivers/block/pktcdvd.c
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Diffstat (limited to 'drivers/block/pktcdvd.c')
-rw-r--r--drivers/block/pktcdvd.c109
1 files changed, 67 insertions, 42 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index b3f83cd96f33..e285413d4a75 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -67,7 +67,7 @@
#include <scsi/scsi.h>
#include <linux/debugfs.h>
#include <linux/device.h>
-
+#include <linux/nospec.h>
#include <linux/uaccess.h>
#define DRIVER_NAME "pktcdvd"
@@ -748,13 +748,13 @@ static const char *sense_key_string(__u8 index)
static void pkt_dump_sense(struct pktcdvd_device *pd,
struct packet_command *cgc)
{
- struct request_sense *sense = cgc->sense;
+ struct scsi_sense_hdr *sshdr = cgc->sshdr;
- if (sense)
+ if (sshdr)
pkt_err(pd, "%*ph - sense %02x.%02x.%02x (%s)\n",
CDROM_PACKET_SIZE, cgc->cmd,
- sense->sense_key, sense->asc, sense->ascq,
- sense_key_string(sense->sense_key));
+ sshdr->sense_key, sshdr->asc, sshdr->ascq,
+ sense_key_string(sshdr->sense_key));
else
pkt_err(pd, "%*ph - no sense\n", CDROM_PACKET_SIZE, cgc->cmd);
}
@@ -787,18 +787,19 @@ static noinline_for_stack int pkt_set_speed(struct pktcdvd_device *pd,
unsigned write_speed, unsigned read_speed)
{
struct packet_command cgc;
- struct request_sense sense;
+ struct scsi_sense_hdr sshdr;
int ret;
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
- cgc.sense = &sense;
+ cgc.sshdr = &sshdr;
cgc.cmd[0] = GPCMD_SET_SPEED;
cgc.cmd[2] = (read_speed >> 8) & 0xff;
cgc.cmd[3] = read_speed & 0xff;
cgc.cmd[4] = (write_speed >> 8) & 0xff;
cgc.cmd[5] = write_speed & 0xff;
- if ((ret = pkt_generic_packet(pd, &cgc)))
+ ret = pkt_generic_packet(pd, &cgc);
+ if (ret)
pkt_dump_sense(pd, &cgc);
return ret;
@@ -1562,7 +1563,8 @@ static int pkt_get_disc_info(struct pktcdvd_device *pd, disc_information *di)
cgc.cmd[8] = cgc.buflen = 2;
cgc.quiet = 1;
- if ((ret = pkt_generic_packet(pd, &cgc)))
+ ret = pkt_generic_packet(pd, &cgc);
+ if (ret)
return ret;
/* not all drives have the same disc_info length, so requeue
@@ -1591,7 +1593,8 @@ static int pkt_get_track_info(struct pktcdvd_device *pd, __u16 track, __u8 type,
cgc.cmd[8] = 8;
cgc.quiet = 1;
- if ((ret = pkt_generic_packet(pd, &cgc)))
+ ret = pkt_generic_packet(pd, &cgc);
+ if (ret)
return ret;
cgc.buflen = be16_to_cpu(ti->track_information_length) +
@@ -1612,17 +1615,20 @@ static noinline_for_stack int pkt_get_last_written(struct pktcdvd_device *pd,
__u32 last_track;
int ret = -1;
- if ((ret = pkt_get_disc_info(pd, &di)))
+ ret = pkt_get_disc_info(pd, &di);
+ if (ret)
return ret;
last_track = (di.last_track_msb << 8) | di.last_track_lsb;
- if ((ret = pkt_get_track_info(pd, last_track, 1, &ti)))
+ ret = pkt_get_track_info(pd, last_track, 1, &ti);
+ if (ret)
return ret;
/* if this track is blank, try the previous. */
if (ti.blank) {
last_track--;
- if ((ret = pkt_get_track_info(pd, last_track, 1, &ti)))
+ ret = pkt_get_track_info(pd, last_track, 1, &ti);
+ if (ret)
return ret;
}
@@ -1645,7 +1651,7 @@ static noinline_for_stack int pkt_get_last_written(struct pktcdvd_device *pd,
static noinline_for_stack int pkt_set_write_settings(struct pktcdvd_device *pd)
{
struct packet_command cgc;
- struct request_sense sense;
+ struct scsi_sense_hdr sshdr;
write_param_page *wp;
char buffer[128];
int ret, size;
@@ -1656,8 +1662,9 @@ static noinline_for_stack int pkt_set_write_settings(struct pktcdvd_device *pd)
memset(buffer, 0, sizeof(buffer));
init_cdrom_command(&cgc, buffer, sizeof(*wp), CGC_DATA_READ);
- cgc.sense = &sense;
- if ((ret = pkt_mode_sense(pd, &cgc, GPMODE_WRITE_PARMS_PAGE, 0))) {
+ cgc.sshdr = &sshdr;
+ ret = pkt_mode_sense(pd, &cgc, GPMODE_WRITE_PARMS_PAGE, 0);
+ if (ret) {
pkt_dump_sense(pd, &cgc);
return ret;
}
@@ -1671,8 +1678,9 @@ static noinline_for_stack int pkt_set_write_settings(struct pktcdvd_device *pd)
* now get it all
*/
init_cdrom_command(&cgc, buffer, size, CGC_DATA_READ);
- cgc.sense = &sense;
- if ((ret = pkt_mode_sense(pd, &cgc, GPMODE_WRITE_PARMS_PAGE, 0))) {
+ cgc.sshdr = &sshdr;
+ ret = pkt_mode_sense(pd, &cgc, GPMODE_WRITE_PARMS_PAGE, 0);
+ if (ret) {
pkt_dump_sense(pd, &cgc);
return ret;
}
@@ -1714,7 +1722,8 @@ static noinline_for_stack int pkt_set_write_settings(struct pktcdvd_device *pd)
wp->packet_size = cpu_to_be32(pd->settings.size >> 2);
cgc.buflen = cgc.cmd[8] = size;
- if ((ret = pkt_mode_select(pd, &cgc))) {
+ ret = pkt_mode_select(pd, &cgc);
+ if (ret) {
pkt_dump_sense(pd, &cgc);
return ret;
}
@@ -1819,7 +1828,8 @@ static noinline_for_stack int pkt_probe_settings(struct pktcdvd_device *pd)
memset(&di, 0, sizeof(disc_information));
memset(&ti, 0, sizeof(track_information));
- if ((ret = pkt_get_disc_info(pd, &di))) {
+ ret = pkt_get_disc_info(pd, &di);
+ if (ret) {
pkt_err(pd, "failed get_disc\n");
return ret;
}
@@ -1830,7 +1840,8 @@ static noinline_for_stack int pkt_probe_settings(struct pktcdvd_device *pd)
pd->type = di.erasable ? PACKET_CDRW : PACKET_CDR;
track = 1; /* (di.last_track_msb << 8) | di.last_track_lsb; */
- if ((ret = pkt_get_track_info(pd, track, 1, &ti))) {
+ ret = pkt_get_track_info(pd, track, 1, &ti);
+ if (ret) {
pkt_err(pd, "failed get_track\n");
return ret;
}
@@ -1905,12 +1916,12 @@ static noinline_for_stack int pkt_write_caching(struct pktcdvd_device *pd,
int set)
{
struct packet_command cgc;
- struct request_sense sense;
+ struct scsi_sense_hdr sshdr;
unsigned char buf[64];
int ret;
init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
- cgc.sense = &sense;
+ cgc.sshdr = &sshdr;
cgc.buflen = pd->mode_offset + 12;
/*
@@ -1918,7 +1929,8 @@ static noinline_for_stack int pkt_write_caching(struct pktcdvd_device *pd,
*/
cgc.quiet = 1;
- if ((ret = pkt_mode_sense(pd, &cgc, GPMODE_WCACHING_PAGE, 0)))
+ ret = pkt_mode_sense(pd, &cgc, GPMODE_WCACHING_PAGE, 0);
+ if (ret)
return ret;
buf[pd->mode_offset + 10] |= (!!set << 2);
@@ -1950,14 +1962,14 @@ static noinline_for_stack int pkt_get_max_speed(struct pktcdvd_device *pd,
unsigned *write_speed)
{
struct packet_command cgc;
- struct request_sense sense;
+ struct scsi_sense_hdr sshdr;
unsigned char buf[256+18];
unsigned char *cap_buf;
int ret, offset;
cap_buf = &buf[sizeof(struct mode_page_header) + pd->mode_offset];
init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_UNKNOWN);
- cgc.sense = &sense;
+ cgc.sshdr = &sshdr;
ret = pkt_mode_sense(pd, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
if (ret) {
@@ -2011,13 +2023,13 @@ static noinline_for_stack int pkt_media_speed(struct pktcdvd_device *pd,
unsigned *speed)
{
struct packet_command cgc;
- struct request_sense sense;
+ struct scsi_sense_hdr sshdr;
unsigned char buf[64];
unsigned int size, st, sp;
int ret;
init_cdrom_command(&cgc, buf, 2, CGC_DATA_READ);
- cgc.sense = &sense;
+ cgc.sshdr = &sshdr;
cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
cgc.cmd[1] = 2;
cgc.cmd[2] = 4; /* READ ATIP */
@@ -2032,7 +2044,7 @@ static noinline_for_stack int pkt_media_speed(struct pktcdvd_device *pd,
size = sizeof(buf);
init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
- cgc.sense = &sense;
+ cgc.sshdr = &sshdr;
cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
cgc.cmd[1] = 2;
cgc.cmd[2] = 4;
@@ -2083,17 +2095,18 @@ static noinline_for_stack int pkt_media_speed(struct pktcdvd_device *pd,
static noinline_for_stack int pkt_perform_opc(struct pktcdvd_device *pd)
{
struct packet_command cgc;
- struct request_sense sense;
+ struct scsi_sense_hdr sshdr;
int ret;
pkt_dbg(2, pd, "Performing OPC\n");
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
- cgc.sense = &sense;
+ cgc.sshdr = &sshdr;
cgc.timeout = 60*HZ;
cgc.cmd[0] = GPCMD_SEND_OPC;
cgc.cmd[1] = 1;
- if ((ret = pkt_generic_packet(pd, &cgc)))
+ ret = pkt_generic_packet(pd, &cgc);
+ if (ret)
pkt_dump_sense(pd, &cgc);
return ret;
}
@@ -2103,19 +2116,22 @@ static int pkt_open_write(struct pktcdvd_device *pd)
int ret;
unsigned int write_speed, media_write_speed, read_speed;
- if ((ret = pkt_probe_settings(pd))) {
+ ret = pkt_probe_settings(pd);
+ if (ret) {
pkt_dbg(2, pd, "failed probe\n");
return ret;
}
- if ((ret = pkt_set_write_settings(pd))) {
+ ret = pkt_set_write_settings(pd);
+ if (ret) {
pkt_dbg(1, pd, "failed saving write settings\n");
return -EIO;
}
pkt_write_caching(pd, USE_WCACHING);
- if ((ret = pkt_get_max_speed(pd, &write_speed)))
+ ret = pkt_get_max_speed(pd, &write_speed);
+ if (ret)
write_speed = 16 * 177;
switch (pd->mmc3_profile) {
case 0x13: /* DVD-RW */
@@ -2124,7 +2140,8 @@ static int pkt_open_write(struct pktcdvd_device *pd)
pkt_dbg(1, pd, "write speed %ukB/s\n", write_speed);
break;
default:
- if ((ret = pkt_media_speed(pd, &media_write_speed)))
+ ret = pkt_media_speed(pd, &media_write_speed);
+ if (ret)
media_write_speed = 16;
write_speed = min(write_speed, media_write_speed * 177);
pkt_dbg(1, pd, "write speed %ux\n", write_speed / 176);
@@ -2132,14 +2149,16 @@ static int pkt_open_write(struct pktcdvd_device *pd)
}
read_speed = write_speed;
- if ((ret = pkt_set_speed(pd, write_speed, read_speed))) {
+ ret = pkt_set_speed(pd, write_speed, read_speed);
+ if (ret) {
pkt_dbg(1, pd, "couldn't set write speed\n");
return -EIO;
}
pd->write_speed = write_speed;
pd->read_speed = read_speed;
- if ((ret = pkt_perform_opc(pd))) {
+ ret = pkt_perform_opc(pd);
+ if (ret) {
pkt_dbg(1, pd, "Optimum Power Calibration failed\n");
}
@@ -2161,10 +2180,12 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
* so bdget() can't fail.
*/
bdget(pd->bdev->bd_dev);
- if ((ret = blkdev_get(pd->bdev, FMODE_READ | FMODE_EXCL, pd)))
+ ret = blkdev_get(pd->bdev, FMODE_READ | FMODE_EXCL, pd);
+ if (ret)
goto out;
- if ((ret = pkt_get_last_written(pd, &lba))) {
+ ret = pkt_get_last_written(pd, &lba);
+ if (ret) {
pkt_err(pd, "pkt_get_last_written failed\n");
goto out_putdev;
}
@@ -2175,7 +2196,8 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
q = bdev_get_queue(pd->bdev);
if (write) {
- if ((ret = pkt_open_write(pd)))
+ ret = pkt_open_write(pd);
+ if (ret)
goto out_putdev;
/*
* Some CDRW drives can not handle writes larger than one packet,
@@ -2190,7 +2212,8 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
clear_bit(PACKET_WRITABLE, &pd->flags);
}
- if ((ret = pkt_set_segment_merging(pd, q)))
+ ret = pkt_set_segment_merging(pd, q);
+ if (ret)
goto out_putdev;
if (write) {
@@ -2231,6 +2254,8 @@ static struct pktcdvd_device *pkt_find_dev_from_minor(unsigned int dev_minor)
{
if (dev_minor >= MAX_WRITERS)
return NULL;
+
+ dev_minor = array_index_nospec(dev_minor, MAX_WRITERS);
return pkt_devs[dev_minor];
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-21 23:07:52 +0300