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5 Commits

Author SHA1 Message Date
Krzysztof Kozlowski
a022c7c96c mailbox: correct kerneldoc 
Correct kerneldoc warnings like:

  drivers/mailbox/arm_mhu_db.c:47:
    warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
  drivers/mailbox/qcom-ipcc.c:58:
    warning: Function parameter or member 'num_chans' not described in 'qcom_ipcc'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
 2022-05-21 11:41:30 -05:00
Viresh Kumar
6b50df2b8c mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer 
It is possible that 'data' passed to kfree() is set to a error value
instead of allocated space. Make sure it doesn't get called with invalid
pointer.

Fixes: 5a6338cce9 ("mailbox: arm_mhuv2: Add driver")
Cc: v5.11 <stable@vger.kernel.org> # v5.11
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
 2021-02-22 13:34:27 -06:00
Uwe Kleine-König
09d12157b3 mailbox: arm_mhuv2: make remove callback return void 
My build tests failed to catch that amba driver that would have needed
adaption in commit 3fd269e74f ("amba: Make the remove callback return
void"). Change the remove function to make the driver build again.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 3fd269e74f ("amba: Make the remove callback return void")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
 2021-02-14 23:27:16 -06:00
Viresh Kumar
af59bcff8a mailbox: arm_mhuv2: Fix sparse warnings 
This patch fixes a bunch of sparse warnings in the newly added arm_mhuv2
driver.

drivers/mailbox/arm_mhuv2.c:506:24: warning: incorrect type in argument 1 (different address spaces)
drivers/mailbox/arm_mhuv2.c:506:24:    expected void const volatile [noderef] __iomem *addr
drivers/mailbox/arm_mhuv2.c:506:24:    got unsigned int [usertype] *
drivers/mailbox/arm_mhuv2.c:547:42: warning: incorrect type in argument 2 (different address spaces)
drivers/mailbox/arm_mhuv2.c:547:42:    expected unsigned int [usertype] *reg
drivers/mailbox/arm_mhuv2.c:547:42:    got unsigned int [noderef] __iomem *
drivers/mailbox/arm_mhuv2.c:625:42: warning: incorrect type in argument 2 (different address spaces)
drivers/mailbox/arm_mhuv2.c:625:42:    expected unsigned int [usertype] *reg
drivers/mailbox/arm_mhuv2.c:625:42:    got unsigned int [noderef] __iomem *
drivers/mailbox/arm_mhuv2.c:972:24: warning: dereference of noderef expression
drivers/mailbox/arm_mhuv2.c:973:22: warning: dereference of noderef expression
drivers/mailbox/arm_mhuv2.c:993:25: warning: dereference of noderef expression
drivers/mailbox/arm_mhuv2.c:1026:24: warning: dereference of noderef expression
drivers/mailbox/arm_mhuv2.c:1027:22: warning: dereference of noderef expression
drivers/mailbox/arm_mhuv2.c:1048:17: warning: dereference of noderef expression

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
 2021-02-14 23:26:31 -06:00
Viresh Kumar
5a6338cce9 mailbox: arm_mhuv2: Add driver 
This adds driver for the ARM MHUv2 (Message Handling Unit) mailbox
controller.

This is based on the accepted DT bindings of the controller and supports
combination of both transport protocols, i.e. doorbell and data-transfer.

Transmitting and receiving data through the mailbox framework is done
through struct arm_mhuv2_mbox_msg.

Based on the initial work done by Morten Borup Petersen from ARM.

Co-developed-by: Tushar Khandelwal <tushar.khandelwal@arm.com>
Signed-off-by: Tushar Khandelwal <tushar.khandelwal@arm.com>
Tested-by: Usama Arif <usama.arif@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
 2020-12-09 19:26:02 -06:00