Two fixes: one in the ufs driver fixing an obvious memory leak and the
other (with a core flag based update) trying to prevent USB crashes by
stopping the core from issuing a request for the I/O Hints mode page.
The patch is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
The short changelog is:
Bart Van Assche (2):
scsi: usb: uas: Do not query the IO Advice Hints Grouping mode page for USB/UAS devices
scsi: core: Introduce the BLIST_SKIP_IO_HINTS flag
Joel Slebodnick (1):
scsi: ufs: core: Free memory allocated for model before reinit
And the diffstat:
drivers/scsi/sd.c | 4 ++++
drivers/ufs/core/ufshcd.c | 1 +
drivers/usb/storage/scsiglue.c | 6 ++++++
drivers/usb/storage/uas.c | 7 +++++++
include/scsi/scsi_devinfo.h | 4 +++-
5 files changed, 21 insertions(+), 1 deletion(-)
With full diff below.
James
---
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index fbc11046bbf6..fe82baa924f8 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -63,6 +63,7 @@
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_device.h>
+#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_driver.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
@@ -3118,6 +3119,9 @@ static void sd_read_io_hints(struct scsi_disk *sdkp, unsigned char *buffer)
struct scsi_mode_data data;
int res;
+ if (sdp->sdev_bflags & BLIST_SKIP_IO_HINTS)
+ return;
+
res = scsi_mode_sense(sdp, /*dbd=*/0x8, /*modepage=*/0x0a,
/*subpage=*/0x05, buffer, SD_BUF_SIZE, SD_TIMEOUT,
sdkp->max_retries, &data, &sshdr);
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index e5e9da61f15d..1b65e6ae4137 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -8787,6 +8787,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
(hba->quirks & UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH)) {
/* Reset the device and controller before doing reinit */
ufshcd_device_reset(hba);
+ ufs_put_device_desc(hba);
ufshcd_hba_stop(hba);
ufshcd_vops_reinit_notify(hba);
ret = ufshcd_hba_enable(hba);
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index b31464740f6c..8c8b5e6041cc 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -79,6 +79,12 @@ static int slave_alloc (struct scsi_device *sdev)
if (us->protocol == USB_PR_BULK && us->max_lun > 0)
sdev->sdev_bflags |= BLIST_FORCELUN;
+ /*
+ * Some USB storage devices reset if the IO advice hints grouping mode
+ * page is queried. Hence skip that mode page.
+ */
+ sdev->sdev_bflags |= BLIST_SKIP_IO_HINTS;
+
return 0;
}
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index a48870a87a29..b610a2de4ae5 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -21,6 +21,7 @@
#include <scsi/scsi.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dbg.h>
+#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
@@ -820,6 +821,12 @@ static int uas_slave_alloc(struct scsi_device *sdev)
struct uas_dev_info *devinfo =
(struct uas_dev_info *)sdev->host->hostdata;
+ /*
+ * Some USB storage devices reset if the IO advice hints grouping mode
+ * page is queried. Hence skip that mode page.
+ */
+ sdev->sdev_bflags |= BLIST_SKIP_IO_HINTS;
+
sdev->hostdata = devinfo;
return 0;
}
diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index 6b548dc2c496..1d79a3b536ce 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -69,8 +69,10 @@
#define BLIST_RETRY_ITF ((__force blist_flags_t)(1ULL << 32))
/* Always retry ABORTED_COMMAND with ASC 0xc1 */
#define BLIST_RETRY_ASC_C1 ((__force blist_flags_t)(1ULL << 33))
+/* Do not query the IO Advice Hints Grouping mode page */
+#define BLIST_SKIP_IO_HINTS ((__force blist_flags_t)(1ULL << 34))
-#define __BLIST_LAST_USED BLIST_RETRY_ASC_C1
+#define __BLIST_LAST_USED BLIST_SKIP_IO_HINTS
#define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \
(__force blist_flags_t) \
