lkml.org 
[lkml]   [2021]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/4] i3c: master: svc: fix atomic issue
Date
do_daa_locked() function is in a spin lock environment, use
readl_poll_timeout_atomic() to replace the origin
readl_poll_timeout().

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
---
drivers/i3c/master/svc-i3c-master.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index c25a372f6820..9d80435638ea 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -656,7 +656,7 @@ static int svc_i3c_master_readb(struct svc_i3c_master *master, u8 *dst,
u32 reg;

for (i = 0; i < len; i++) {
- ret = readl_poll_timeout(master->regs + SVC_I3C_MSTATUS, reg,
+ ret = readl_poll_timeout_atomic(master->regs + SVC_I3C_MSTATUS, reg,
SVC_I3C_MSTATUS_RXPEND(reg), 0, 1000);
if (ret)
return ret;
@@ -687,7 +687,7 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
* Either one slave will send its ID, or the assignment process
* is done.
*/
- ret = readl_poll_timeout(master->regs + SVC_I3C_MSTATUS, reg,
+ ret = readl_poll_timeout_atomic(master->regs + SVC_I3C_MSTATUS, reg,
SVC_I3C_MSTATUS_RXPEND(reg) |
SVC_I3C_MSTATUS_MCTRLDONE(reg),
1, 1000);
@@ -744,7 +744,7 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
}

/* Wait for the slave to be ready to receive its address */
- ret = readl_poll_timeout(master->regs + SVC_I3C_MSTATUS, reg,
+ ret = readl_poll_timeout_atomic(master->regs + SVC_I3C_MSTATUS, reg,
SVC_I3C_MSTATUS_MCTRLDONE(reg) &&
SVC_I3C_MSTATUS_STATE_DAA(reg) &&
SVC_I3C_MSTATUS_BETWEEN(reg),
--
2.25.1
\
 
 \ /
  Last update: 2021-07-15 10:24    [W:0.096 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site