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authorIngo Molnar <mingo@kernel.org>2019-02-04 08:45:42 +0100
committerIngo Molnar <mingo@kernel.org>2019-02-04 08:45:42 +0100
commit98cb621081705e2244ef6c265ff8a9f2208c7e2a (patch)
tree6205be47a83d54d3e35e049b67973244120f8bd6 /drivers/scsi/sd.c
parentMerge tag 'perf-core-for-mingo-5.0-20190126' of git://git.kernel.org/pub/scm/... (diff)
parentperf/core: Don't WARN() for impossible ring-buffer sizes (diff)
downloadlinux-98cb621081705e2244ef6c265ff8a9f2208c7e2a.tar.xz
linux-98cb621081705e2244ef6c265ff8a9f2208c7e2a.zip
Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index a1a44f52e0e8..b2da8a00ec33 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -206,6 +206,12 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
sp = buffer_data[0] & 0x80 ? 1 : 0;
buffer_data[0] &= ~0x80;
+ /*
+ * Ensure WP, DPOFUA, and RESERVED fields are cleared in
+ * received mode parameter buffer before doing MODE SELECT.
+ */
+ data.device_specific = 0;
+
if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT,
SD_MAX_RETRIES, &data, &sshdr)) {
if (scsi_sense_valid(&sshdr))