From: Gavin Shan <gshan@redhat.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, Jonathan.Cameron@huawei.com,
james.morse@arm.com, mark.rutland@arm.com,
catalin.marinas@arm.com, will@kernel.org, shan.gavin@gmail.com
Subject: [PATCH v5 01/13] firmware: arm_sdei: Remove sdei_is_err()
Date: Tue, 22 Sep 2020 23:04:11 +1000 [thread overview]
Message-ID: <20200922130423.10173-2-gshan@redhat.com> (raw)
In-Reply-To: <20200922130423.10173-1-gshan@redhat.com>
sdei_is_err() is only called by sdei_to_linux_errno(). The logic of
checking on the error number is common to them. They can be combined
finely.
This removes sdei_is_err() and its logic is combined to the function
sdei_to_linux_errno(). Also, the assignment of @err to zero is also
dropped in invoke_sdei_fn() because it's always overridden afterwards.
This shouldn't cause functional changes.
Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: James Morse <james.morse@arm.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
drivers/firmware/arm_sdei.c | 26 +++-----------------------
1 file changed, 3 insertions(+), 23 deletions(-)
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index b4b9ce97f415..2d256b2ed4b4 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -114,26 +114,7 @@ static int sdei_to_linux_errno(unsigned long sdei_err)
return -ENOMEM;
}
- /* Not an error value ... */
- return sdei_err;
-}
-
-/*
- * If x0 is any of these values, then the call failed, use sdei_to_linux_errno()
- * to translate.
- */
-static int sdei_is_err(struct arm_smccc_res *res)
-{
- switch (res->a0) {
- case SDEI_NOT_SUPPORTED:
- case SDEI_INVALID_PARAMETERS:
- case SDEI_DENIED:
- case SDEI_PENDING:
- case SDEI_OUT_OF_RESOURCE:
- return true;
- }
-
- return false;
+ return 0;
}
static int invoke_sdei_fn(unsigned long function_id, unsigned long arg0,
@@ -141,14 +122,13 @@ static int invoke_sdei_fn(unsigned long function_id, unsigned long arg0,
unsigned long arg3, unsigned long arg4,
u64 *result)
{
- int err = 0;
+ int err;
struct arm_smccc_res res;
if (sdei_firmware_call) {
sdei_firmware_call(function_id, arg0, arg1, arg2, arg3, arg4,
&res);
- if (sdei_is_err(&res))
- err = sdei_to_linux_errno(res.a0);
+ err = sdei_to_linux_errno(res.a0);
} else {
/*
* !sdei_firmware_call means we failed to probe or called
--
2.23.0
next prev parent reply other threads:[~2020-09-22 13:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-22 13:04 [PATCH v5 00/13] Refactor SDEI client driver Gavin Shan
2020-09-22 13:04 ` Gavin Shan [this message]
2020-09-22 13:04 ` [PATCH v5 02/13] firmware: arm_sdei: Common block for failing path in sdei_event_create() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 03/13] firmware: arm_sdei: Retrieve event number from event instance Gavin Shan
2020-09-22 13:04 ` [PATCH v5 04/13] firmware: arm_sdei: Avoid nested statements in sdei_init() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 05/13] firmware: arm_sdei: Unregister driver on error " Gavin Shan
2020-09-22 13:04 ` [PATCH v5 06/13] firmware: arm_sdei: Remove duplicate check in sdei_get_conduit() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 07/13] firmware: arm_sdei: Remove redundant error message in sdei_probe() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 08/13] firmware: arm_sdei: Remove while loop in sdei_event_register() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 09/13] firmware: arm_sdei: Remove while loop in sdei_event_unregister() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 10/13] firmware: arm_sdei: Cleanup on cross call function Gavin Shan
2020-09-22 13:04 ` [PATCH v5 11/13] firmware: arm_sdei: Introduce sdei_do_local_call() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 12/13] firmware: arm_sdei: Remove _sdei_event_register() Gavin Shan
2020-09-22 13:04 ` [PATCH v5 13/13] firmware: arm_sdei: Remove _sdei_event_unregister() Gavin Shan
2020-09-28 22:13 ` [PATCH v5 00/13] Refactor SDEI client driver Will Deacon
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