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path: root/drivers/hwspinlock/stm32_hwspinlock.c
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2019-12-28hwspinlock: stm32: convert to devm_platform_ioremap_resourceYangtao Li
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>
2019-06-29hwspinlock: stm32: implement the relax() opsFabien Dessenne
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>
2019-01-03hwspinlock: fix return value check in stm32_hwspinlock_probe()Wei Yongjun
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>
2018-12-05hwspinlock: add STM32 hwspinlock deviceBenjamin Gaignard
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>