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| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2011-09-13 16:41:12 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-20 12:33:49 -0700 |
| commit | 170c026347c867a71e27713b98c58b266146c468 (patch) | |
| tree | de0b8e1855b93ecae7d6d6dfe3138c6228b5fb54 /drivers/usb/host/xhci-mem.c | |
| parent | 75d7cf72ab9fa01dc70877aa5c68e8ef477229dc (diff) | |
| download | blackbird-op-linux-170c026347c867a71e27713b98c58b266146c468.tar.gz blackbird-op-linux-170c026347c867a71e27713b98c58b266146c468.zip | |
xhci: Fix mult base in endpoint bandwidth info.
The "Mult" bits in the SuperSpeed Endpoint Companion Descriptor are
zero-based, and the xHCI host controller wants them to be zero-based in
the input context. However, for the bandwidth math, we want them to be
one-based. Fix this.
Fix the documentation about the endpoint bandwidth mult variable in the
xhci.h file, which says it is zero-based. Also fix the documentation
about num_packets, which is also one-based, not zero-based.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index c4b8959e01e7..94a8b28d602e 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1473,11 +1473,12 @@ void xhci_update_bw_info(struct xhci_hcd *xhci, /* Added or changed endpoint */ bw_info->ep_interval = CTX_TO_EP_INTERVAL( le32_to_cpu(ep_ctx->ep_info)); - bw_info->mult = CTX_TO_EP_MULT( - le32_to_cpu(ep_ctx->ep_info)); - /* Number of packets is zero-based in the input context, - * but we want one-based for the interval table. + /* Number of packets and mult are zero-based in the + * input context, but we want one-based for the + * interval table. */ + bw_info->mult = CTX_TO_EP_MULT( + le32_to_cpu(ep_ctx->ep_info)) + 1; bw_info->num_packets = CTX_TO_MAX_BURST( le32_to_cpu(ep_ctx->ep_info2)) + 1; bw_info->max_packet_size = MAX_PACKET_DECODED( |
