lkml.org 
[lkml]   [2023]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2] i2c: bcm-iproc: Fix bcm_iproc_i2c_isr deadlock issue
Hi Chengfeng,

On Fri, Jul 07, 2023 at 08:49:41AM +0000, Chengfeng Ye wrote:
> iproc_i2c_rd_reg() and iproc_i2c_wr_reg() are called from both
> interrupt context (e.g. bcm_iproc_i2c_isr) and process context
> (e.g. bcm_iproc_i2c_suspend). Therefore, interrupts should be
> disabled to avoid potential deadlock. To prevent this scenario,
> use spin_lock_irqsave().
>
> Fixes: 9a1038728037 ("i2c: iproc: add NIC I2C support")
> Signed-off-by: Chengfeng Ye <dg573847474@gmail.com>

Reviewed-by: Andi Shyti <andi.shyti@kernel.org>

Thanks,
Andi

\
 
 \ /
  Last update: 2023-07-27 22:44    [W:0.048 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site