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| author | Niklas Cassel <[email protected]> | 2025-02-21 01:54:23 +0000 |
|---|---|---|
| committer | Niklas Cassel <[email protected]> | 2025-02-21 17:28:22 +0000 |
| commit | 91ec84f8eaddbc93d7c62e363d68aeb7b89879c7 (patch) | |
| tree | 8493dc3b49aaef616c18b1ccb6e443e5e370aa71 /net/core/dev_api.c | |
| parent | dt-bindings: ata: Convert fsl,pq-sata to YAML (diff) | |
| download | kernel-91ec84f8eaddbc93d7c62e363d68aeb7b89879c7.tar.gz kernel-91ec84f8eaddbc93d7c62e363d68aeb7b89879c7.zip | |
ata: libata-eh: Do not use ATAPI DMA for a device limited to PIO mode
atapi_eh_request_sense() currently uses ATAPI DMA if the SATA controller
has ATA_FLAG_PIO_DMA (PIO cmds via DMA) set.
However, ATA_FLAG_PIO_DMA is a flag that can be set by a low-level driver
on a port at initialization time, before any devices are scanned.
If a controller detects a connected device that only supports PIO, we set
the flag ATA_DFLAG_PIO.
Modify atapi_eh_request_sense() to not use ATAPI DMA if the connected
device only supports PIO.
Reported-by: Philip Pemberton <[email protected]>
Closes: https://lore.kernel.org/linux-ide/[email protected]/
Tested-by: Philip Pemberton <[email protected]>
Reviewed-by: Damien Le Moal <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Niklas Cassel <[email protected]>
Diffstat (limited to 'net/core/dev_api.c')
0 files changed, 0 insertions, 0 deletions