diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 22 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 6 |
2 files changed, 14 insertions, 14 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 7ff2ff29b48e..1a16b44506da 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2259,24 +2259,24 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) } static struct xhci_interrupter * -xhci_alloc_interrupter(struct xhci_hcd *xhci, int segs, gfp_t flags) +xhci_alloc_interrupter(struct xhci_hcd *xhci, unsigned int segs, gfp_t flags) { struct device *dev = xhci_to_hcd(xhci)->self.sysdev; struct xhci_interrupter *ir; - unsigned int num_segs = segs; + unsigned int max_segs; int ret; + if (!segs) + segs = ERST_DEFAULT_SEGS; + + max_segs = BIT(HCS_ERST_MAX(xhci->hcs_params2)); + segs = min(segs, max_segs); + ir = kzalloc_node(sizeof(*ir), flags, dev_to_node(dev)); if (!ir) return NULL; - /* number of ring segments should be greater than 0 */ - if (segs <= 0) - num_segs = min_t(unsigned int, 1 << HCS_ERST_MAX(xhci->hcs_params2), - ERST_MAX_SEGS); - - ir->event_ring = xhci_ring_alloc(xhci, num_segs, 1, TYPE_EVENT, 0, - flags); + ir->event_ring = xhci_ring_alloc(xhci, segs, 1, TYPE_EVENT, 0, flags); if (!ir->event_ring) { xhci_warn(xhci, "Failed to allocate interrupter event ring\n"); kfree(ir); @@ -2334,7 +2334,7 @@ xhci_add_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir, } struct xhci_interrupter * -xhci_create_secondary_interrupter(struct usb_hcd *hcd, int num_seg) +xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_interrupter *ir; @@ -2344,7 +2344,7 @@ xhci_create_secondary_interrupter(struct usb_hcd *hcd, int num_seg) if (!xhci->interrupters || xhci->max_interrupters <= 1) return NULL; - ir = xhci_alloc_interrupter(xhci, num_seg, GFP_KERNEL); + ir = xhci_alloc_interrupter(xhci, segs, GFP_KERNEL); if (!ir) return NULL; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 1c9519205330..8a3ae5049d1c 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1392,8 +1392,8 @@ struct urb_priv { struct xhci_td td[] __counted_by(num_tds); }; -/* Reasonable limit for number of Event Ring segments (spec allows 32k) */ -#define ERST_MAX_SEGS 2 +/* Number of Event Ring segments to allocate, when amount is not specified. (spec allows 32k) */ +#define ERST_DEFAULT_SEGS 2 /* Poll every 60 seconds */ #define POLL_TIMEOUT 60 /* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */ @@ -1831,7 +1831,7 @@ struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); struct xhci_interrupter * -xhci_create_secondary_interrupter(struct usb_hcd *hcd, int num_seg); +xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs); void xhci_remove_secondary_interrupter(struct usb_hcd *hcd, struct xhci_interrupter *ir); |