From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Fri, 3 Nov 2017 20:37:03 +0100
* Add a jump target so that a specific error message is stored only once
at the end of this function implementation.
* Replace four calls of the function "dev_err" by goto statements.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
drivers/staging/unisys/visorbus/visorchipset.c | 36 ++++++++++++--------------
1 file changed, 16 insertions(+), 20 deletions(-)
diff --git a/drivers/staging/unisys/visorbus/visorchipset.c
b/drivers/staging/unisys/visorbus/visorchipset.c
index fed554a43151..1d54821dd7b6 100644
--- a/drivers/staging/unisys/visorbus/visorchipset.c
+++ b/drivers/staging/unisys/visorbus/visorchipset.c
@@ -1231,11 +1231,9 @@ static void setup_crash_devices_work_queue(struct
work_struct *work)
if (visorchannel_read(chipset_dev->controlvm_channel,
offsetof(struct visor_controlvm_channel,
saved_crash_message_count),
- &local_crash_msg_count, sizeof(u16)) < 0) {
- dev_err(&chipset_dev->acpi_device->dev,
- "failed to read channel\n");
- return;
- }
+ &local_crash_msg_count, sizeof(u16)) < 0)
+ goto report_read_failure;
+
if (local_crash_msg_count != CONTROLVM_CRASHMSG_MAX) {
dev_err(&chipset_dev->acpi_device->dev, "invalid count\n");
return;
@@ -1244,30 +1242,24 @@ static void setup_crash_devices_work_queue(struct
work_struct *work)
if (visorchannel_read(chipset_dev->controlvm_channel,
offsetof(struct visor_controlvm_channel,
saved_crash_message_offset),
- &local_crash_msg_offset, sizeof(u32)) < 0) {
- dev_err(&chipset_dev->acpi_device->dev,
- "failed to read channel\n");
- return;
- }
+ &local_crash_msg_offset, sizeof(u32)) < 0)
+ goto report_read_failure;
+
/* read create device message for storage bus offset */
if (visorchannel_read(chipset_dev->controlvm_channel,
local_crash_msg_offset,
&local_crash_bus_msg,
- sizeof(struct controlvm_message)) < 0) {
- dev_err(&chipset_dev->acpi_device->dev,
- "failed to read channel\n");
- return;
- }
+ sizeof(struct controlvm_message)) < 0)
+ goto report_read_failure;
+
/* read create device message for storage device */
if (visorchannel_read(chipset_dev->controlvm_channel,
local_crash_msg_offset +
sizeof(struct controlvm_message),
&local_crash_dev_msg,
- sizeof(struct controlvm_message)) < 0) {
- dev_err(&chipset_dev->acpi_device->dev,
- "failed to read channel\n");
- return;
- }
+ sizeof(struct controlvm_message)) < 0)
+ goto report_read_failure;
+
/* reuse IOVM create bus message */
if (!local_crash_bus_msg.cmd.create_bus.channel_addr) {
dev_err(&chipset_dev->acpi_device->dev,
@@ -1282,6 +1274,10 @@ static void setup_crash_devices_work_queue(struct
work_struct *work)
return;
}
visorbus_device_create(&local_crash_dev_msg);
+ return;
+
+report_read_failure:
+ dev_err(&chipset_dev->acpi_device->dev, "failed to read channel\n");
}
void visorbus_response(struct visor_device *bus_info, int response,
--
2.15.0
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