diff options
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 | |
parent | e54bdc187efcc029dd723128fe1fc518f7387d53 (diff) | |
download | linux-fsl-qoriq-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')
-rw-r--r-- | arch/arm/mach-omap2/board-4430sdp.c | 44 | ||||
-rw-r--r-- | arch/arm/mach-omap2/board-omap4panda.c | 49 | ||||
-rw-r--r-- | arch/arm/mach-omap2/common.h | 3 | ||||
-rw-r--r-- | arch/arm/mach-omap2/omap4-common.c | 58 |
4 files changed, 61 insertions, 93 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, diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c index 1b782ba..c148472 100644 --- a/arch/arm/mach-omap2/board-omap4panda.c +++ b/arch/arm/mach-omap2/board-omap4panda.c @@ -236,55 +236,6 @@ struct wl12xx_platform_data omap_panda_wlan_data __initdata = { .board_ref_clock = 2, }; -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; - - if (!pdata) { - dev_err(dev, "%s: NULL platform data\n", __func__); - return -EINVAL; - } - /* Setting MMC1 Card detect Irq */ - if (pdev->id == 0) { - irq = twl6030_mmc_card_detect_config(); - if (irq < 0) { - dev_err(dev, "%s: Error card detect config(%d)\n", - __func__, irq); - return 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 omap4_twl6030_hsmmc_set_late_init\n"); - 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 twl6040_codec_data twl6040_codec = { /* single-step ramp for headset and handsfree */ .hs_left_step = 0x0f, diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 57da7f4..c09ca63 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -27,6 +27,7 @@ #ifndef __ASSEMBLER__ #include <linux/delay.h> +#include <linux/i2c/twl.h> #include <plat/common.h> #include <asm/proc-fns.h> @@ -254,6 +255,8 @@ static inline u32 omap4_mpuss_read_prev_context_state(void) struct omap_sdrc_params; extern void omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0, struct omap_sdrc_params *sdrc_cs1); +struct omap2_hsmmc_info; +extern int omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers); #endif /* __ASSEMBLER__ */ #endif /* __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H */ diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c index 70de277..a8161e5 100644 --- a/arch/arm/mach-omap2/omap4-common.c +++ b/arch/arm/mach-omap2/omap4-common.c @@ -25,11 +25,13 @@ #include <plat/irqs.h> #include <plat/sram.h> #include <plat/omap-secure.h> +#include <plat/mmc.h> #include <mach/hardware.h> #include <mach/omap-wakeupgen.h> #include "common.h" +#include "hsmmc.h" #include "omap4-sar-layout.h" #include <linux/export.h> @@ -207,3 +209,59 @@ static int __init omap4_sar_ram_init(void) return 0; } early_initcall(omap4_sar_ram_init); + +#if defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE) +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) { + dev_err(dev, "%s: Error card detect config(%d)\n", + __func__, irq); + 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; +} + +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++) { + /* pdev can be null if CONFIG_MMC_OMAP_HS is not set */ + if (!c->pdev) + continue; + omap4_twl6030_hsmmc_set_late_init(&c->pdev->dev); + } + + return 0; +} +#else +int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers) +{ + return 0; +} +#endif |