hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

misc: mei: fix stalled read 

This bug caused severe connectivity issue in the LMS application
(LMS is described in  Documentation/misc-devices/mei/mei.txt)

The bug was introduced in patch:
commit 1ccb7b6249
staging/mei: propagate error codes up in the write flow

The patch has reverted the return value logic of some fo function but
the conditional in _mei_irq_thread_read function was not swapped
making read always entering the error path

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2012-05-29 16:39:12 +03:00 committed by Greg Kroah-Hartman
parent a44cab4aff
commit 1e69d64a28
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/misc/mei/interrupt.c
View File

@ -835,7 +835,7 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
struct mei_cl *cl, struct mei_cl *cl,
struct mei_io_list *cmpl_list) struct mei_io_list *cmpl_list)
{ {
if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) + if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_flow_control))) { sizeof(struct hbm_flow_control))) {
/* return the cancel routine */ /* return the cancel routine */
list_del(&cb_pos->cb_list); list_del(&cb_pos->cb_list);