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@xxxxxx>
Reported-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
---
v3:
do nothing in omap4_twl6030_hsmmc_init when CONFIG_MMC_OMAP_HS is disabled
v2:
move omap4 mmc board init functions to omap4-common.c
arch/arm/mach-omap2/board-4430sdp.c | 44 -----------------------
arch/arm/mach-omap2/board-omap4panda.c | 49 --------------------------
arch/arm/mach-omap2/board-omap4pcm049.c | 45 ------------------------
arch/arm/mach-omap2/common.h | 3 ++
arch/arm/mach-omap2/omap4-common.c | 58 +++++++++++++++++++++++++++++++
5 files changed, 61 insertions(+), 138 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index a39fc4b..ec06103 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -488,50 +488,6 @@ 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 f864065..0ecf074 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -235,55 +235,6 @@ static 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 twl4030_codec_data twl6040_codec = {
/* single-step ramp for headset and handsfree */
.hs_left_step = 0x0f,
diff --git a/arch/arm/mach-omap2/board-omap4pcm049.c b/arch/arm/mach-omap2/board-omap4pcm049.c
index 8dc93dc..d46714e 100644
--- a/arch/arm/mach-omap2/board-omap4pcm049.c
+++ b/arch/arm/mach-omap2/board-omap4pcm049.c
@@ -153,51 +153,6 @@ static inline void __init pcm049_init_smsc911x(void)
static inline void __init pcm049_init_smsc911x(void) { return; }
#endif
-static int omap4_twl6030_hsmmc_late_init(struct device *dev)
-{
- int ret = 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) {
- ret = twl6030_mmc_card_detect_config();
- if (ret)
- dev_err(dev, "%s: Error card detect config(%d)\n",
- __func__, ret);
- pdata->slots[0].card_detect_irq = TWL6030_IRQ_BASE +
- MMCDETECT_INTR_OFFSET;
- pdata->slots[0].card_detect = twl6030_mmc_card_detect;
- }
- return ret;
-}
-
-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;
-}
-
/* Fixed regulator for max1027 */
static struct regulator_consumer_supply pcm049_vcc_3v3_consumer_supply[] = {
REGULATOR_SUPPLY("vcc", "4-0064"),
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 0e95efc..f14b3ae 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>
@@ -252,6 +253,8 @@ 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
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
