linux-toradex.git/drivers/hwspinlock/stm32_hwspinlock.c, branch v6.4 Linux kernel for Apalis and Colibri modules hwspinlock: stm32: Use struct_size() helper in devm_kzalloc() 2022-03-11T20:56:15+00:00 Gustavo A. R. Silva gustavoars@kernel.org 2022-01-25T02:13:53+00:00 3e5f1ff7e4f297b928fb579fa1e8ec65a400162e Make use of the struct_size() helper instead of an open-coded version, in order to avoid any potential type mistakes or integer overflows that, in the worst scenario, could lead to heap overflows. Also, address the following sparse warnings: drivers/hwspinlock/stm32_hwspinlock.c:84:32: warning: using sizeof on a flexible structure Link: https://github.com/KSPP/linux/issues/174 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Baolin Wang <baolin.wang7@gmail.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220125021353.GA29777@embeddedor 
Make use of the struct_size() helper instead of an open-coded version,
in order to avoid any potential type mistakes or integer overflows that,
in the worst scenario, could lead to heap overflows.

Also, address the following sparse warnings:
drivers/hwspinlock/stm32_hwspinlock.c:84:32: warning: using sizeof on a flexible structure

Link: https://github.com/KSPP/linux/issues/174
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220125021353.GA29777@embeddedor
hwspinlock: stm32: enable clock at probe 2021-11-17T22:12:44+00:00 Fabien Dessenne fabien.dessenne@foss.st.com 2021-10-11T13:58:36+00:00 60630924bb5af8751adcecc896e7763c3783ca89 Set the clock during probe and keep its control during suspend / resume operations. This fixes an issue when CONFIG_PM is not set and where the clock is never enabled. Make use of devm_ functions to simplify the code. Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20211011135836.1045437-1-fabien.dessenne@foss.st.com 
Set the clock during probe and keep its control during suspend / resume
operations.
This fixes an issue when CONFIG_PM is not set and where the clock is
never enabled.

Make use of devm_ functions to simplify the code.

Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211011135836.1045437-1-fabien.dessenne@foss.st.com
hwspinlock: stm32: convert to devm_platform_ioremap_resource 2019-12-29T04:43:23+00:00 Yangtao Li tiny.windzz@gmail.com 2019-12-28T19:15:41+00:00 d4824486b676ef87071081bdb77a6de2a5a341c7 Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Link: https://lore.kernel.org/r/20191228191541.26999-1-tiny.windzz@gmail.com Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> 
Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Link: https://lore.kernel.org/r/20191228191541.26999-1-tiny.windzz@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
hwspinlock: stm32: implement the relax() ops 2019-06-30T04:04:24+00:00 Fabien Dessenne fabien.dessenne@st.com 2019-03-07T15:42:16+00:00 5cd69f13deef804d113d31c5c744396b1a1b8a9a Implement this optional ops, called by hwspinlock core while spinning on a lock, between two successive invocations of trylock(). Reviewed-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> 
Implement this optional ops, called by hwspinlock core while spinning on
a lock, between two successive invocations of trylock().

Reviewed-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
hwspinlock: fix return value check in stm32_hwspinlock_probe() 2019-01-03T19:42:10+00:00 Wei Yongjun weiyongjun1@huawei.com 2019-01-03T07:02:30+00:00 4d5a91fd1f42a821d14b92b082b8e71be9911ba5 In case of error, the function devm_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: f24fcff1d267 ("hwspinlock: add STM32 hwspinlock device") Acked-by: Benjamin Gaignard <benjamin.gaignard@gmail.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> 
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: f24fcff1d267 ("hwspinlock: add STM32 hwspinlock device")
Acked-by: Benjamin Gaignard <benjamin.gaignard@gmail.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
hwspinlock: add STM32 hwspinlock device 2018-12-05T20:45:21+00:00 Benjamin Gaignard benjamin.gaignard@st.com 2018-11-14T09:00:25+00:00 f24fcff1d267da08c4bbb3869e7f4b36ce916b76 This patch adds support of hardware semaphores for stm32mp1 SoC. The hardware block provides 32 semaphores. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> 
This patch adds support of hardware semaphores for stm32mp1 SoC.
The hardware block provides 32 semaphores.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>