From: Matt Pelland <mpelland@starry.com>
Date: Mon, 16 Apr 2018 14:08:18 +0000 (-0400)
Subject: mmc: mv_sdhci: zero out sdhci_host structure
X-Git-Tag: v2018.05-rc3~57^2
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=ca4e7d674ee6931c7a4effd697e644d7646cfac0;p=u-boot

mmc: mv_sdhci: zero out sdhci_host structure

The mv_sdhci driver was not zeroing the sdhci_host structure it
allocates causing random access violations in parts of the mmc core
where the "ops" member pointers are checked and called if not NULL.

Signed-off-by: Matt Pelland <mpelland@starry.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
---

diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
index 69aa87babe..0ed0d38c90 100644
--- a/drivers/mmc/mv_sdhci.c
+++ b/drivers/mmc/mv_sdhci.c
@@ -68,7 +68,7 @@ static char *MVSDH_NAME = "mv_sdh";
 int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks)
 {
 	struct sdhci_host *host = NULL;
-	host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
+	host = calloc(1, sizeof(*host));
 	if (!host) {
 		printf("sdh_host malloc fail!\n");
 		return -ENOMEM;