diff options
| author | Douglas Anderson <dianders@chromium.org> | 2026-04-06 16:22:55 -0700 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-04-26 23:38:02 +0200 |
| commit | f2648bb3150a71241a2254aa4ac10680d7f9fb16 (patch) | |
| tree | 398b597f56ef473efe41725634717a3a4920636d /include/linux | |
| parent | 254f49634ee16a731174d2ae34bc50bd5f45e731 (diff) | |
driver core: Replace dev->can_match with dev_can_match()
In C, bitfields are not necessarily safe to modify from multiple
threads without locking. Switch "can_match" over to the "flags" field
so modifications are safe.
Cc: Saravana Kannan <saravanak@kernel.org>
Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patch.msgid.link/20260406162231.v5.2.I54b3ae6311ff34ad30227659d91bb109911a4aea@changeid
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/device.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 9c8fde6a3d86..00113821ebe9 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -512,10 +512,14 @@ struct device_physical_location { * * @DEV_FLAG_READY_TO_PROBE: If set then device_add() has finished enough * initialization that probe could be called. + * @DEV_FLAG_CAN_MATCH: The device has matched with a driver at least once or it + * is in a bus (like AMBA) which can't check for matching drivers + * until other devices probe successfully. * @DEV_FLAG_COUNT: Number of defined struct_device_flags. */ enum struct_device_flags { DEV_FLAG_READY_TO_PROBE = 0, + DEV_FLAG_CAN_MATCH = 1, DEV_FLAG_COUNT }; @@ -602,9 +606,6 @@ enum struct_device_flags { * @state_synced: The hardware state of this device has been synced to match * the software state of this device by calling the driver/bus * sync_state() callback. - * @can_match: The device has matched with a driver at least once or it is in - * a bus (like AMBA) which can't check for matching drivers until - * other devices probe successfully. * @dma_coherent: this particular device is dma coherent, even if the * architecture supports non-coherent devices. * @dma_ops_bypass: If set to %true then the dma_ops are bypassed for the @@ -723,7 +724,6 @@ struct device { bool offline:1; bool of_node_reused:1; bool state_synced:1; - bool can_match:1; #if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \ defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \ defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) @@ -765,6 +765,7 @@ static inline bool dev_test_and_set_##accessor_name(struct device *dev) \ } __create_dev_flag_accessors(ready_to_probe, DEV_FLAG_READY_TO_PROBE); +__create_dev_flag_accessors(can_match, DEV_FLAG_CAN_MATCH); #undef __create_dev_flag_accessors |