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authorJonas Aaberg <jonas.aberg@stericsson.com>2012-06-18 12:35:28 +0400
committerLee Jones <lee.jones@linaro.org>2013-03-07 08:27:52 +0400
commit222460cb4b2fe1c1e84f3302a8d8dbc4a94f6837 (patch)
treef2abb5061e2e4c4ba8aade141cb8ddae35ca4811 /drivers/mfd/ab8500-debugfs.c
parent3e1a498f2728476535571d270081a17fdfceaf26 (diff)
downloadlinux-222460cb4b2fe1c1e84f3302a8d8dbc4a94f6837.tar.xz
mfd: ab8500-debug: Better error handling on crash
Stop trying to read i2c registers if one fail. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Mattias WALLIN <mattias.wallin@stericsson.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/ab8500-debugfs.c')
-rw-r--r--drivers/mfd/ab8500-debugfs.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 7febf171e755..1e76a2f35066 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -608,7 +608,6 @@ struct ab8500_register_dump
u8 bank;
u8 reg;
u8 value;
- int ret;
} ab8500_complete_register_dump[DUMP_MAX_REGS];
extern int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size);
@@ -618,6 +617,7 @@ void ab8500_dump_all_banks_to_mem(void)
{
int i, r = 0;
u8 bank;
+ int err = 0;
pr_info("Saving all ABB registers at \"ab8500_complete_register_dump\" "
"for crash analyze.\n");
@@ -630,11 +630,12 @@ void ab8500_dump_all_banks_to_mem(void)
reg <= debug_ranges[bank].range[i].last;
reg++) {
u8 value;
- int err;
err = prcmu_abb_read(bank, reg, &value, 1);
- ab8500_complete_register_dump[r].ret = err;
+ if (err < 0)
+ goto out;
+
ab8500_complete_register_dump[r].bank = bank;
ab8500_complete_register_dump[r].reg = reg;
ab8500_complete_register_dump[r].value = value;
@@ -644,11 +645,17 @@ void ab8500_dump_all_banks_to_mem(void)
if (r >= DUMP_MAX_REGS) {
pr_err("%s: too many register to dump!\n",
__func__);
- return;
+ err = -EINVAL;
+ goto out;
}
}
}
}
+out:
+ if (err >= 0)
+ pr_info("Saved all ABB registers.\n");
+ else
+ pr_info("Failed to save all ABB registers.\n");
}
static int ab8500_all_banks_open(struct inode *inode, struct file *file)