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| author |   Niklas Neronin <niklas.neronin@linux.intel.com> | 2025-05-15 16:56:16 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-21 12:35:33 +0200 |
| commit | 74d7a757e8bcb753850c5e379c087c8424528f6a (patch) | |
| tree | 2f74fb3e7edc2ce01b0932782189ea33a1ec600b /drivers/usb/host/xhci.h | |
| parent | usb: xhci: rework Event Ring Segment Table Size mask (diff) | |
| download | wireguard-linux-74d7a757e8bcb753850c5e379c087c8424528f6a.tar.xz wireguard-linux-74d7a757e8bcb753850c5e379c087c8424528f6a.zip | |
usb: xhci: rework Event Ring Segment Table Address mask
Event Ring Segment Table Base Address Register contain two fields:
- Bits 5:0: RsvdP (Reserved and Preserved)
- Bits 63:6: Event Ring Segment Table Base Address
Currently, an inverted RsvdP mask (ERST_BASE_RSVDP) is used to extract
bits 63:6. Replaces the inverted mask with a non-inverted mask,
'ERST_BASE_ADDRESS_MASK', which makes the code easier to read.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20250515135621.335595-20-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/host/xhci.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 19dd47d76140..7865e21f0b1f 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -255,7 +255,8 @@ struct xhci_intr_reg { #define ERST_SIZE_MASK (0xffff) /* erst_base bitmasks */ -#define ERST_BASE_RSVDP (GENMASK_ULL(5, 0)) +/* bits 63:6 - Event Ring Segment Table Base Address Register */ +#define ERST_BASE_ADDRESS_MASK GENMASK_ULL(63, 6) /* erst_dequeue bitmasks */ /* Dequeue ERST Segment Index (DESI) - Segment number (or alias) |