leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone

Browse Source 
ti_abb_wait_txdone() may return -ETIMEDOUT when ti_abb_check_txdone()
returns true in the latest iteration of the while loop because the timeout
value is abb->settling_time + 1. Similarly, ti_abb_clear_all_txdone() may
return -ETIMEDOUT when ti_abb_check_txdone() returns false in the latest
iteration of the while loop. Fix it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20190929095848.21960-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Axel Lin 2019-09-29 17:58:48 +08:00 committed by Mark Brown
parent a72865f057
commit f64db54879
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/regulator/ti-abb-regulator.c
View File

@ -173,21 +173,16 @@ static int ti_abb_wait_txdone(struct device *dev, struct ti_abb *abb)
while (timeout++ <= abb->settling_time) {
status = ti_abb_check_txdone(abb);
if (status)
break;
return 0;
udelay(1);
}
if (timeout > abb->settling_time) {
dev_warn_ratelimited(dev,
"%s:TRANXDONE timeout(%duS) int=0x%08x\n",
dev_warn_ratelimited(dev, "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
__func__, timeout, readl(abb->int_base));
return -ETIMEDOUT;
}
return 0;
}
/**
* ti_abb_clear_all_txdone() - clears ABB tranxdone event
* @dev: device
@ -205,21 +200,16 @@ static int ti_abb_clear_all_txdone(struct device *dev, const struct ti_abb *abb)
status = ti_abb_check_txdone(abb);
if (!status)
break;
return 0;
udelay(1);
}
if (timeout > abb->settling_time) {
dev_warn_ratelimited(dev,
"%s:TRANXDONE timeout(%duS) int=0x%08x\n",
dev_warn_ratelimited(dev, "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
__func__, timeout, readl(abb->int_base));
return -ETIMEDOUT;
}
return 0;
}
/**
* ti_abb_program_ldovbb() - program LDOVBB register for override value
* @dev: device