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| author | Balaji T K <balajitk@ti.com> | 2012-04-25 11:57:46 (GMT) |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2012-05-09 00:16:24 (GMT) |
| commit | 1ee47b0ae83e3cae2f9362113b3935898fdb3ea9 (patch) | |
| tree | 3ef26910e99261d1f9fbf25b0926fcf708bd3372 /arch/arm/mach-omap2/board-4430sdp.c | |
| parent | e54bdc187efcc029dd723128fe1fc518f7387d53 (diff) | |
| download | linux-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.c | 44 |
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 130ab00..6dc1848 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, |