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| author | Li Qiang <liqiang01@kylinos.cn> | 2026-07-17 23:39:10 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-07-26 15:51:54 -0400 |
| commit | 9e6dd452f1affb5c412ca64bf5809ce9fde3174d (patch) | |
| tree | 3907ae7b917852a3b754f7e8f00b329fb3f62b14 | |
| parent | 331bda797e6afc143127ce72b1469d73316f49b4 (diff) | |
| download | linux-next-9e6dd452f1affb5c412ca64bf5809ce9fde3174d.tar.gz linux-next-9e6dd452f1affb5c412ca64bf5809ce9fde3174d.zip | |
scsi: ufs: core: Validate connected lane counts
The connected lane count is used by TX equalization code to index arrays
sized by UFS_MAX_LANES. Reject zero and out-of-range RX or TX lane counts
before they can be propagated.
Fixes: 03e5d38e2f98 ("scsi: ufs: core: Add support for TX Equalization")
Signed-off-by: Li Qiang <liqiang01@kylinos.cn>
Link: https://patch.msgid.link/20260717153914.26321-4-liqiang01@kylinos.cn
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/ufs/core/ufshcd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index d1b989abc9e2..bbadddcd661a 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -4729,7 +4729,9 @@ static int ufshcd_get_max_pwr_mode(struct ufs_hba *hba) ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES), &pwr_info->lane_tx); - if (!pwr_info->lane_rx || !pwr_info->lane_tx) { + if (!pwr_info->lane_rx || !pwr_info->lane_tx || + pwr_info->lane_rx > UFS_MAX_LANES || + pwr_info->lane_tx > UFS_MAX_LANES) { dev_err(hba->dev, "%s: invalid connected lanes value. rx=%d, tx=%d\n", __func__, pwr_info->lane_rx, |