evie/android_kernel_oneplus_msm8998
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Merge "regulator: cpr3: fix panic callback failure in interrupt context"

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Linux Build Service Account 2016-08-26 22:22:37 -07:00 • committed by Gerrit - the friendly Code Review server
commit 373c6ba99f
3 changed files with 9 additions and 4 deletions
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5
drivers/regulator/cpr3-regulator.c
View file

@ -5935,14 +5935,11 @@ static int cpr3_panic_callback(struct notifier_block *nfb,
struct cpr3_controller, panic_notifier);
struct cpr3_panic_regs_info *regs_info = ctrl->panic_regs_info;
struct cpr3_reg_info *reg;
void __iomem *virt_addr;
int i = 0;
for (i = 0; i < regs_info->reg_count; i++) {
reg = &(regs_info->regs[i]);
virt_addr = ioremap(reg->addr, 0x4);
reg->value = readl_relaxed(virt_addr);
iounmap(virt_addr);
reg->value = readl_relaxed(reg->virt_addr);
pr_err("%s[0x%08x] = 0x%08x\n", reg->name, reg->addr,
reg->value);
}

2
drivers/regulator/cpr3-regulator.h
View file

@ -498,6 +498,7 @@ struct cpr3_aging_sensor_info {
* @name: Register name
* @addr: Register physical address
* @value: Register content
* @virt_addr: Register virtual address
*
* This data structure is used to dump some critical register contents
* when the device crashes due to a kernel panic.
@ -506,6 +507,7 @@ struct cpr3_reg_info {
const char *name;
u32 addr;
u32 value;
void __iomem *virt_addr;
};
/**

6
drivers/regulator/cpr3-util.c
View file

@ -1078,6 +1078,12 @@ static int cpr3_panic_notifier_init(struct cpr3_controller *ctrl)
rc);
return rc;
}
regs[i].virt_addr = devm_ioremap(ctrl->dev, regs[i].addr, 0x4);
if (!regs[i].virt_addr) {
pr_err("Unable to map panic register addr 0x%08x\n",
regs[i].addr);
return -EINVAL;
}
regs[i].value = 0xFFFFFFFF;
}