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crypto: qat - add shutdown handler to qat_420xx

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commit 097143f23a1164bfd1b6f70279d229be44da2e30 upstream.

During a warm reset via kexec, the system bypasses the driver removal
sequence, meaning that the remove() callback is not invoked.
If a QAT device is not shutdown properly, the device driver will fail to
load in a newly rebooted kernel.

This might result in output like the following after the kexec reboot:

    420xx 0000:01:00.0: Failed to power up the device
    420xx 0000:01:00.0: Failed to initialize device
    420xx 0000:01:00.0: Resetting device qat_dev0
    420xx 0000:01:00.0: probe with driver 420xx failed with error -14

Implement the shutdown() handler that hooks into the reboot notifier
list. This brings down the QAT device and ensures it is shut down
properly.

Cc: <stable@vger.kernel.org>
Fixes: fcf60f4bcf ("crypto: qat - add support for 420xx devices")
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Giovanni Cabiddu
2025-03-26 15:59:47 +00:00
committed by Greg Kroah-Hartman
parent 261f2a655b
commit 5e4e6d0cae
1 changed files with 8 additions and 0 deletions
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8
drivers/crypto/intel/qat/qat_420xx/adf_drv.c
View File

@@ -181,11 +181,19 @@ static void adf_remove(struct pci_dev *pdev)
adf_cleanup_accel(accel_dev);
}
static void adf_shutdown(struct pci_dev *pdev)
{
struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
adf_dev_down(accel_dev);
}
static struct pci_driver adf_driver = {
.id_table = adf_pci_tbl,
.name = ADF_420XX_DEVICE_NAME,
.probe = adf_probe,
.remove = adf_remove,
.shutdown = adf_shutdown,
.sriov_configure = adf_sriov_configure,
.err_handler = &adf_err_handler,
};