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drivers/can: enter_critical_section in can_poll

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This commit is contained in:
Oleg Evseev 2020-07-05 19:10:54 +03:00 committed by Alan Carvalho de Assis
parent 247bc10c26
commit 908ee31e7d
1 changed files with 7 additions and 1 deletions
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8
drivers/can/can.c
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@ -1024,6 +1024,7 @@ static int can_poll(FAR struct file *filep, FAR struct pollfd *fds,
FAR struct can_reader_s *reader = NULL;
pollevent_t eventset;
int ndx;
irqstate_t flags;
int ret;
int i;
@ -1036,6 +1037,8 @@ static int can_poll(FAR struct file *filep, FAR struct pollfd *fds,
}
#endif
flags = enter_critical_section();
DEBUGASSERT(filep->f_priv != NULL);
reader = (FAR struct can_reader_s *)filep->f_priv;
@ -1048,7 +1051,7 @@ static int can_poll(FAR struct file *filep, FAR struct pollfd *fds,
* will abort the operation
*/
return ret;
goto return_with_irqdisabled;
}
/* Are we setting up the poll? Or tearing it down? */
@ -1162,6 +1165,9 @@ static int can_poll(FAR struct file *filep, FAR struct pollfd *fds,
errout:
can_givesem(&dev->cd_pollsem);
return_with_irqdisabled:
leave_critical_section(flags);
return ret;
}