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UPSTREAM: scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc()

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In ufshcd_disable_tx_lcc(), if ufshcd_dme_get() or ufshcd_dme_peer_get()
get fail, uninitialized variable "tx_lanes" may be used as unexpected lane
ID for DME configuration.

Fix this issue by initializing "tx_lanes".

Bug: 151050916
Change-Id: Id347f4b47976a90e90ebd066c6f5d209f7155769
(cherry picked from commit ba0320fbb809de541a9b396e153171151607bac8)
Link: https://lore.kernel.org/r/20200318104016.28049-2-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Stanley Chu 2020-03-18 18:40:10 +08:00 • committed by Greg Kroah-Hartman
commit 058a7d0395
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/ufs/ufshcd.c
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@ -4527,7 +4527,7 @@ EXPORT_SYMBOL_GPL(ufshcd_hba_enable);
static int ufshcd_disable_tx_lcc(struct ufs_hba *hba, bool peer)
{
int tx_lanes, i, err = 0;
int tx_lanes = 0, i, err = 0;
if (!peer)
ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES),