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Subject[PATCH V1] mmc: sdhci-msm: Override DLL_CONFIG only if the valid value is supplied
Date
During DLL initialization, the DLL_CONFIG register value would be
updated with the value supplied from the device-tree.

Override this register only if a valid value is supplied.

Fixes: 03591160ca19 ("mmc: sdhci-msm: Read and use DLL Config property from device tree file")
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
---
drivers/mmc/host/sdhci-msm.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index efd2bae1430c..93d67a3a899f 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -626,8 +626,9 @@ static int msm_init_cm_dll(struct sdhci_host *host)
config &= ~CORE_CLK_PWRSAVE;
writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);

- config = msm_host->dll_config;
- writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
+ if (msm_host->dll_config)
+ writel_relaxed(msm_host->dll_config,
+ host->ioaddr + msm_offset->core_dll_config);

if (msm_host->use_14lpp_dll_reset) {
config = readl_relaxed(host->ioaddr +
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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