From: Cyril Bur <cyrilbur@gmail.com>
To: linuxppc-dev@lists.ozlabs.org, linux-mtd@lists.infradead.org
Cc: benh@kernel.crashing.org, stewart@linux.vnet.ibm.com,
dwmw2@infradead.org, rlippert@google.com, alistair@popple.id.au
Subject: [PATCH v2 01/10] mtd: powernv_flash: Use WARN_ON_ONCE() rather than BUG_ON()
Date: Mon, 10 Jul 2017 11:30:57 +1000 [thread overview]
Message-ID: <20170710013106.27276-2-cyrilbur@gmail.com> (raw)
In-Reply-To: <20170710013106.27276-1-cyrilbur@gmail.com>
BUG_ON() should be reserved in situations where we can not longer
guarantee the integrity of the system. In the case where
powernv_flash_async_op() receives an impossible op, we can still
guarantee the integrity of the system.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
---
drivers/mtd/devices/powernv_flash.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c
index f5396f26ddb4..a9a20c00687c 100644
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -78,7 +78,8 @@ static int powernv_flash_async_op(struct mtd_info *mtd, enum flash_op op,
rc = opal_flash_erase(info->id, offset, len, token);
break;
default:
- BUG_ON(1);
+ WARN_ON_ONCE(1);
+ return -EIO;
}
if (rc != OPAL_ASYNC_COMPLETION) {
--
2.13.2
next prev parent reply other threads:[~2017-07-10 1:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-10 1:30 [PATCH v2 00/10] Allow opal-async waiters to get interrupted Cyril Bur
2017-07-10 1:30 ` Cyril Bur [this message]
2017-07-10 1:30 ` [PATCH v2 02/10] mtd: powernv_flash: Lock around concurrent access to OPAL Cyril Bur
2017-07-10 1:30 ` [PATCH v2 03/10] mtd: powernv_flash: Don't treat OPAL_SUCCESS as an error Cyril Bur
2017-07-10 1:31 ` [PATCH v2 04/10] mtd: powernv_flash: Remove pointless goto in driver init Cyril Bur
2017-07-10 1:31 ` [PATCH v2 05/10] powerpc/opal: Make __opal_async_{get, release}_token() static Cyril Bur
2017-07-10 1:31 ` [PATCH v2 06/10] powerpc/opal: Rework the opal-async interface Cyril Bur
2017-07-10 1:31 ` [PATCH v2 07/10] powernv/opal-sensor: remove not needed lock Cyril Bur
2017-07-10 1:31 ` [PATCH v2 08/10] powerpc/opal: Add opal_async_wait_response_interruptible() to opal-async Cyril Bur
2017-07-10 14:05 ` David Laight
2017-07-10 14:05 ` David Laight
2017-07-11 0:48 ` Cyril Bur
2017-07-10 1:31 ` [PATCH v2 09/10] powerpc/powernv: Add OPAL_BUSY to opal_error_code() Cyril Bur
2017-07-10 1:31 ` [PATCH v2 10/10] mtd: powernv_flash: Use opal_async_wait_response_interruptible() Cyril Bur
2017-07-11 4:19 ` kbuild test robot
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