kernel/drivers/hwspinlock, branch linux-6.5.y

hwspinlock: qcom: add missing regmap config for SFPB MMIO implementation

2023-09-19T10:30:23Z

commit 23316be8a9d450f33a21f1efe7d89570becbec58 upstream. Commit 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older SoCs") introduced and made regmap_config mandatory in the of_data struct but didn't add the regmap_config for sfpb based devices. SFPB based devices can both use the legacy syscon way to probe or the new MMIO way and currently device that use the MMIO way are broken as they lack the definition of the now required regmap_config and always return -EINVAL (and indirectly makes fail probing everything that depends on it, smem, nandc with smem-parser...) Fix this by correctly adding the missing regmap_config and restore function of hwspinlock on SFPB based devices with MMIO implementation. Cc: stable@vger.kernel.org Fixes: 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older SoCs") Signed-off-by: Christian Marangi Link: https://lore.kernel.org/r/20230716022804.21239-1-ansuelsmth@gmail.com Signed-off-by: Bjorn Andersson Signed-off-by: Greg Kroah-Hartman

hwspinlock: omap: drop of_match_ptr for ID table

2023-06-14T15:15:24Z

The driver can match only via the DT table so the table should be always used and the of_match_ptr does not have any sense (this also allows ACPI matching via PRP0001, even though it might not be relevant here). drivers/hwspinlock/omap_hwspinlock.c:164:34: error: ‘omap_hwspinlock_of_match’ defined but not used [-Werror=unused-const-variable=] Reviewed-by: Baolin Wang Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20230512164520.212312-1-krzysztof.kozlowski@linaro.org

hwspinlock: remove MODULE_LICENSE in non-modules

2023-04-13T20:13:52Z

Since commit 8b41fc4454e ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations are used to identify modules. As a consequence, uses of the macro in non-modules will cause modprobe to misidentify their containing object file as a module when it is not (false positives), and modprobe might succeed rather than failing with a suitable error message. So remove it in the files in this commit, none of which can be built as modules. Signed-off-by: Nick Alcock Suggested-by: Luis Chamberlain Cc: Luis Chamberlain Cc: linux-modules@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Hitomi Hasegawa Cc: Ohad Ben-Cohen Cc: Bjorn Andersson Cc: linux-remoteproc@vger.kernel.org Signed-off-by: Luis Chamberlain

hwspinlock: Use device_match_of_node()

2022-12-28T16:39:20Z

Replace the open-code with device_match_of_node(). Signed-off-by: ye xingchen Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Baolin Wang Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/202211251544369078587@zte.com.cn

hwspinlock: qcom: add support for MMIO on older SoCs

2022-09-13T22:01:18Z

Older Qualcomm SoCs have TCSR mutex registers with 0x80 stride, instead of 0x1000. Add dedicated compatibles and regmap for such case. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220909092035.223915-5-krzysztof.kozlowski@linaro.org

hwspinlock: qcom: correct MMIO max register for newer SoCs

2022-09-13T22:01:18Z

Newer ARMv8 Qualcomm SoCs using 0x1000 register stride have maximum register 0x20000 (32 mutexes * 0x1000). Fixes: 7a1e6fb1c606 ("hwspinlock: qcom: Allow mmio usage in addition to syscon") Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220909092035.223915-4-krzysztof.kozlowski@linaro.org

hwspinlock: qcom: Add support for mmio usage to sfpb-mutex

2022-07-17T02:47:44Z

Allow sfpb-mutex to use mmio in addition to syscon. Signed-off-by: Christian Marangi Reviewed-by: Bjorn Andersson Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220707102040.1859-1-ansuelsmth@gmail.com

hwspinlock: using pm_runtime_resume_and_get instead of pm_runtime_get_sync

2022-04-22T23:03:04Z

Using pm_runtime_resume_and_get is more appropriate for simplifing code Reported-by: Zeal Robot Signed-off-by: Minghao Chi Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220418105508.2558696-1-chi.minghao@zte.com.cn

hwspinlock: sprd: Use struct_size() helper in devm_kzalloc()

2022-03-11T20:56:57Z

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/sprd_hwspinlock.c:96:36: warning: using sizeof on a flexible structure Link: https://github.com/KSPP/linux/issues/174 Signed-off-by: Gustavo A. R. Silva Reviewed-by: Baolin Wang Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220125225723.GA78256@embeddedor

hwspinlock: stm32: Use struct_size() helper in devm_kzalloc()

2022-03-11T20:56:15Z

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 Reviewed-by: Baolin Wang Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220125021353.GA29777@embeddedor