diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-26 14:29:51 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-12-01 06:03:53 +0100 |
| commit | b8a5144370bc59dbb192b8f29298920ceadc3d1e (patch) | |
| tree | 74d1625f82f9861614682a72eeb0ded3737fd130 /drivers/message/fusion/mptbase.c | |
| parent | scsi: myrs: Remove WARN_ON(in_interrupt()) (diff) | |
| download | linux-b8a5144370bc59dbb192b8f29298920ceadc3d1e.tar.xz linux-b8a5144370bc59dbb192b8f29298920ceadc3d1e.zip | |
scsi: message: fusion: Remove in_interrupt() usage in mpt_config()
in_interrupt() is referenced all over the place in these drivers. Most of
these references are comments which are outdated and wrong.
Aside of that in_interrupt() is deprecated as it does not provide what the
name suggests. It covers more than hard/soft interrupt servicing context
and is semantically ill defined.
>From reading the mpt_config() code and the history this is clearly a debug
mechanism and should probably be replaced by might_sleep() or completely
removed because such checks are already in the subsequent functions.
Remove the in_interrupt() references and replace the usage in mpt_config()
with might_sleep().
Link: https://lore.kernel.org/r/20201126132952.2287996-14-bigeasy@linutronix.de
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: MPT-FusionLinux.pdl@broadcom.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/message/fusion/mptbase.c')
| -rw-r--r-- | drivers/message/fusion/mptbase.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 3078fac34e51..549797d0301d 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -57,7 +57,7 @@ #include <linux/kdev_t.h> #include <linux/blkdev.h> #include <linux/delay.h> -#include <linux/interrupt.h> /* needed for in_interrupt() proto */ +#include <linux/interrupt.h> #include <linux/dma-mapping.h> #include <linux/kthread.h> #include <scsi/scsi_host.h> @@ -6335,7 +6335,6 @@ SendEventAck(MPT_ADAPTER *ioc, EventNotificationReply_t *evnp) * Page header is updated. * * Returns 0 for success - * -EPERM if not allowed due to ISR context * -EAGAIN if no msg frames currently available * -EFAULT for non-successful reply or no reply (timeout) */ @@ -6353,19 +6352,10 @@ mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS *pCfg) u8 page_type = 0, extend_page; unsigned long timeleft; unsigned long flags; - int in_isr; u8 issue_hard_reset = 0; u8 retry_count = 0; - /* Prevent calling wait_event() (below), if caller happens - * to be in ISR context, because that is fatal! - */ - in_isr = in_interrupt(); - if (in_isr) { - dcprintk(ioc, printk(MYIOC_s_WARN_FMT "Config request not allowed in ISR context!\n", - ioc->name)); - return -EPERM; - } + might_sleep(); /* don't send a config page during diag reset */ spin_lock_irqsave(&ioc->taskmgmt_lock, flags); |