From: Luo Jiaxing luojiaxing@huawei.com
mainline inclusion from mainline-v5.16-rc1 commit 9aec5ffa6e39926cff1a6b576c815a9cee90e259 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I7X774 CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The hisi_hba debugfs_dump_index member should increased after a dump insertion completed, and not before it has started, so fix the code to do so.
Link: https://lore.kernel.org/r/1629799260-120116-6-git-send-email-john.garry@huaw... Signed-off-by: Luo Jiaxing luojiaxing@huawei.com Signed-off-by: John Garry john.garry@huawei.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: xiabing xiabing12@h-partners.com --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index ecb45f69a1a8..67304286eef2 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -3812,7 +3812,6 @@ static void debugfs_snapshot_regs_v3_hw(struct hisi_hba *hisi_hba)
do_div(timestamp, NSEC_PER_MSEC); hisi_hba->debugfs_timestamp[debugfs_dump_index] = timestamp; - hisi_hba->debugfs_dump_index++;
debugfs_snapshot_prepare_v3_hw(hisi_hba);
@@ -3828,6 +3827,7 @@ static void debugfs_snapshot_regs_v3_hw(struct hisi_hba *hisi_hba) debugfs_create_files_v3_hw(hisi_hba);
debugfs_snapshot_restore_v3_hw(hisi_hba); + hisi_hba->debugfs_dump_index++; }
static ssize_t debugfs_trigger_dump_v3_hw_write(struct file *file,