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authorBalaji T K <balajitk@ti.com>2012-04-25 15:57:46 +0400
committerTony Lindgren <tony@atomide.com>2012-05-09 04:16:24 +0400
commit1ee47b0ae83e3cae2f9362113b3935898fdb3ea9 (patch)
tree3ef26910e99261d1f9fbf25b0926fcf708bd3372 /arch/arm/mach-omap2/board-4430sdp.c
parente54bdc187efcc029dd723128fe1fc518f7387d53 (diff)
downloadlinux-1ee47b0ae83e3cae2f9362113b3935898fdb3ea9.tar.xz
ARM: OMAP4: hsmmc: check for null pointer
platform_device pdev can be NULL if CONFIG_MMC_OMAP_HS is not set. Add check for NULL pointer. while at it move the duplicated functions to omap4-common.c Fixes the following boot crash seen with omap4sdp and omap4panda when MMC is disabled. Unable to handle kernel NULL pointer dereference at virtual address 0000008c pgd = c0004000 [0000008c] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: CPU: 0 Not tainted (3.4.0-rc1-05971-ga4dfa82 #4) PC is at omap_4430sdp_init+0x184/0x410 LR is at device_add+0x1a0/0x664 Signed-off-by: Balaji T K <balajitk@ti.com> Reported-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/board-4430sdp.c')
-rw-r--r--arch/arm/mach-omap2/board-4430sdp.c44
1 files changed, 0 insertions, 44 deletions
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 130ab00c09a2..6dc184841892 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -489,50 +489,6 @@ static struct platform_device omap_vwlan_device = {
},
};
-static int omap4_twl6030_hsmmc_late_init(struct device *dev)
-{
- int irq = 0;
- struct platform_device *pdev = container_of(dev,
- struct platform_device, dev);
- struct omap_mmc_platform_data *pdata = dev->platform_data;
-
- /* Setting MMC1 Card detect Irq */
- if (pdev->id == 0) {
- irq = twl6030_mmc_card_detect_config();
- if (irq < 0) {
- pr_err("Failed configuring MMC1 card detect\n");
- return irq;
- }
- pdata->slots[0].card_detect_irq = irq;
- pdata->slots[0].card_detect = twl6030_mmc_card_detect;
- }
- return 0;
-}
-
-static __init void omap4_twl6030_hsmmc_set_late_init(struct device *dev)
-{
- struct omap_mmc_platform_data *pdata;
-
- /* dev can be null if CONFIG_MMC_OMAP_HS is not set */
- if (!dev) {
- pr_err("Failed %s\n", __func__);
- return;
- }
- pdata = dev->platform_data;
- pdata->init = omap4_twl6030_hsmmc_late_init;
-}
-
-static int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
-{
- struct omap2_hsmmc_info *c;
-
- omap_hsmmc_init(controllers);
- for (c = controllers; c->mmc; c++)
- omap4_twl6030_hsmmc_set_late_init(&c->pdev->dev);
-
- return 0;
-}
-
static struct regulator_init_data sdp4430_vaux1 = {
.constraints = {
.min_uV = 1000000,