linux/drivers/hwspinlock, branch v5.7

hwspinlock: hwspinlock_internal.h: Replace zero-length array with flexible-array member

2020-03-26T05:30:46Z

The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Reviewed-by: Baolin Wang Signed-off-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20200319213839.GA10669@embeddedor.com Signed-off-by: Bjorn Andersson

hwspinlock: Allow drivers to be built with COMPILE_TEST

2020-03-26T05:30:46Z

Allow drivers to be built with COMPILE_TEST. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/5a95c3de07ef020a4e2f2776fa5adb00637ee387.1581324976.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: sirf: Use devm_hwspin_lock_register() to register hwlock controller

2020-01-22T00:16:36Z

Use devm_hwspin_lock_register() to register the hwlock controller instead of unregistering the hwlock controller explicitly when removing the device. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/8f94e67b5f9af20a93418a2fc9cc71b194f1285c.1578453662.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: sirf: Remove redundant PM runtime functions

2020-01-22T00:16:30Z

Since the hwspinlock core has changed the PM runtime to be optional, and the SIRF hardware spinlock has no pm runtime requirement, thus remove these redundant PM runtime functions. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/c921e391aa2a652d8d6ae0e4041202cec9d917e7.1578453662.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: sirf: Change to use devm_platform_ioremap_resource()

2020-01-22T00:16:16Z

Use the new helper that wraps the calls to platform_get_resource() and devm_ioremap_resource() together, which can simpify the code. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/dfa043f317c609a6172468ac11598968dd751bce.1578453662.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: omap: Use devm_kzalloc() to allocate memory

2020-01-22T00:11:25Z

Use devm_kzalloc() to allocate memory, which can simplify the error handling. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/c066ad704c1a5fd52c3002cac80ddd59b3901b01.1578453062.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: omap: Change to use devm_platform_ioremap_resource()

2020-01-22T00:11:11Z

Use the new helper that wraps the calls to platform_get_resource() and devm_ioremap_resource() together, which can simpify the code. Meanwhile renaming the error label to make more sense after removing iounmap(). Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/6c09c5034a7e68fdfc22d2cb5daa375bccb33a66.1578453062.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: qcom: Use devm_hwspin_lock_register() to register hwlock controller

2020-01-22T00:10:07Z

Use devm_hwspin_lock_register() to register the hwlock controller instead of unregistering the hwlock controller explicitly when removing the device. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/d69ad8611a68b0cac3c927d19901f3c113c5435c.1578452735.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: qcom: Remove redundant PM runtime functions

2020-01-22T00:09:10Z

Since the hwspinlock core has changed the PM runtime to be optional, and the Qualcomm hardware spinlock has no pm runtime requirement, thus remove these redundant PM runtime functions. Signed-off-by: Baolin Wang Link: https://lore.kernel.org/r/e0bb751feb7af709f92e52a07d0e8ebcf1ee44ff.1578452735.git.baolin.wang7@gmail.com Signed-off-by: Bjorn Andersson

hwspinlock: stm32: convert to devm_platform_ioremap_resource

2019-12-29T04:43:23Z

Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li Link: https://lore.kernel.org/r/20191228191541.26999-1-tiny.windzz@gmail.com Signed-off-by: Bjorn Andersson