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authorHaijun.Zhang <Haijun.Zhang@freescale.com>2013-10-31 09:38:18 +0800
committerPantelis Antoniou <panto@antoniou-consulting.com>2013-10-31 09:55:34 +0200
commita54d68113261ad5da8ff43fd0d5ed811fb1d361d (patch)
tree0622e0c3c9b3c042f38f26f515dbca78f481e28f /drivers/mmc/fsl_esdhc.c
parent511948b2cb1105fbec3e0f4cfb215e266860ae71 (diff)
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esdhc: memset mmc struct before putting into use
struct mmc should be clear to all '0' after malloc to avoid unexpect variable value. Like mmc->has_init = xxx. In this case mmcinfo will believe the card had been initialized before and skip the initialization. Test on P5040 and T4240, Error Log: => mmcinfo Device: FSL_SDHC Manufacturer ID: 0 OEM: 0 Name: Tran Speed: 0 Rd Block Len: 0 MMC version 0.0 High Capacity: No Capacity: 0 Bytes Bus Width: 0-bit => Signed-off-by: Haijun Zhang <Haijun.Zhang@freescale.com> Signed-off-by: Xie Shaohui-B21989 <B21989@freescale.com> Tested-by: Ryan Barnett <rjbarnet@rockwellcollins.com> Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Diffstat (limited to 'drivers/mmc/fsl_esdhc.c')
-rw-r--r--drivers/mmc/fsl_esdhc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index a9fe911..1f9c305 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -533,6 +533,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
if (!mmc)
return -ENOMEM;
+ memset(mmc, 0, sizeof(struct mmc));
sprintf(mmc->name, "FSL_SDHC");
regs = (struct fsl_esdhc *)cfg->esdhc_base;