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| author |   Saravana Kannan <saravanak@google.com> | 2021-03-02 13:11:30 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-23 14:58:10 +0100 |
| commit | f2db85b64f0af1410ccb8ebcc9d7fa38e99feee9 (patch) | |
| tree | 113e0dc325b8c52029fcc9c8e043f35c3cd841c4 /include/linux/device.h | |
| parent | devtmpfs: actually reclaim some init memory (diff) | |
| download | linux-dev-f2db85b64f0af1410ccb8ebcc9d7fa38e99feee9.tar.xz linux-dev-f2db85b64f0af1410ccb8ebcc9d7fa38e99feee9.zip | |
driver core: Avoid pointless deferred probe attempts
There's no point in adding a device to the deferred probe list if we
know for sure that it doesn't have a matching driver. So, check if a
device can match with a driver before adding it to the deferred probe
list.
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210302211133.2244281-2-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/device.h')
| -rw-r--r-- | include/linux/device.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index a8ce0dc3b758..38a2071cf776 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -439,6 +439,9 @@ struct dev_links_info { * @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 @@ -545,6 +548,7 @@ 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) |