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scsi: ufs-qcom: fix bug with read/modify write of UFS_CFG1 

ufs_qcom_print_hw_debug_reg_all() function is having a bug where it
might incorrectly modify undesired bits in UFS_CFG1 register, this
change fixes it.

Reviewed-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Subhash Jadavani 2016-12-05 19:25:42 -08:00 committed by Martin K. Petersen
parent 56d4a1866d
commit b84ca6e9c7
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/ufs/ufs-qcom.c
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@ -1470,7 +1470,8 @@ static void ufs_qcom_print_hw_debug_reg_all(struct ufs_hba *hba,
reg = ufs_qcom_get_debug_reg_offset(host, UFS_UFS_DBG_RD_PRDT_RAM);
print_fn(hba, reg, 64, "UFS_UFS_DBG_RD_PRDT_RAM ", priv);
ufshcd_writel(hba, (reg & ~UFS_BIT(17)), REG_UFS_CFG1);
/* clear bit 17 - UTP_DBG_RAMS_EN */
ufshcd_rmwl(hba, UFS_BIT(17), 0, REG_UFS_CFG1);
reg = ufs_qcom_get_debug_reg_offset(host, UFS_DBG_RD_REG_UAWM);
print_fn(hba, reg, 4, "UFS_DBG_RD_REG_UAWM ", priv);