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From f56b0b76fdd4b17bd359536ae926c4cb04706e54 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Sat, 8 Sep 2012 15:17:53 +0100
Subject: [PATCH 030/174] Avoid dynamic memory allocation for channel lock in
USB driver. Thanks ddv2005.
---
drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 6 +++---
drivers/usb/host/dwc_otg/dwc_otg_hcd.h | 2 +-
drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c | 3 +--
drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 3 +--
4 files changed, 6 insertions(+), 8 deletions(-)
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
@@ -822,6 +822,7 @@ static void dwc_otg_hcd_free(dwc_otg_hcd
} else if (dwc_otg_hcd->status_buf != NULL) {
DWC_FREE(dwc_otg_hcd->status_buf);
}
+ DWC_SPINLOCK_FREE(dwc_otg_hcd->channel_lock);
DWC_SPINLOCK_FREE(dwc_otg_hcd->lock);
/* Set core_if's lock pointer to NULL */
dwc_otg_hcd->core_if->lock = NULL;
@@ -848,6 +849,7 @@ int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd
dwc_hc_t *channel;
hcd->lock = DWC_SPINLOCK_ALLOC();
+ hcd->channel_lock = DWC_SPINLOCK_ALLOC();
DWC_DEBUGPL(DBG_HCDV, "init of HCD %p given core_if %p\n",
hcd, core_if);
if (!hcd->lock) {
@@ -1248,7 +1250,7 @@ dwc_otg_transaction_type_e dwc_otg_hcd_s
dwc_otg_qh_t *qh;
int num_channels;
dwc_irqflags_t flags;
- dwc_spinlock_t *channel_lock = DWC_SPINLOCK_ALLOC();
+ dwc_spinlock_t *channel_lock = hcd->channel_lock;
dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE;
#ifdef DEBUG_SOF
@@ -1348,8 +1350,6 @@ dwc_otg_transaction_type_e dwc_otg_hcd_s
#ifdef DEBUG_HOST_CHANNELS
last_sel_trans_num_avail_hc_at_end = hcd->available_host_channels;
#endif /* DEBUG_HOST_CHANNELS */
-
- DWC_SPINLOCK_FREE(channel_lock);
return ret_val;
}
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
@@ -548,7 +548,7 @@ struct dwc_otg_hcd {
/* */
dwc_spinlock_t *lock;
-
+ dwc_spinlock_t *channel_lock;
/**
* Private data that could be used by OS wrapper.
*/
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
@@ -276,7 +276,7 @@ void dump_frame_list(dwc_otg_hcd_t * hcd
static void release_channel_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
{
dwc_irqflags_t flags;
- dwc_spinlock_t *channel_lock = DWC_SPINLOCK_ALLOC();
+ dwc_spinlock_t *channel_lock = hcd->channel_lock;
dwc_hc_t *hc = qh->channel;
if (dwc_qh_is_non_per(qh)) {
@@ -306,7 +306,6 @@ static void release_channel_ddma(dwc_otg
dwc_memset(qh->desc_list, 0x00,
sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
}
- DWC_SPINLOCK_FREE(channel_lock);
}
/**
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
@@ -922,7 +922,7 @@ static void release_channel(dwc_otg_hcd_
dwc_otg_transaction_type_e tr_type;
int free_qtd;
dwc_irqflags_t flags;
- dwc_spinlock_t *channel_lock = DWC_SPINLOCK_ALLOC();
+ dwc_spinlock_t *channel_lock = hcd->channel_lock;
DWC_DEBUGPL(DBG_HCDV, " %s: channel %d, halt_status %d, xfer_len %d\n",
__func__, hc->hc_num, halt_status, hc->xfer_len);
@@ -1009,7 +1009,6 @@ cleanup:
if (tr_type != DWC_OTG_TRANSACTION_NONE) {
dwc_otg_hcd_queue_transactions(hcd, tr_type);
}
- DWC_SPINLOCK_FREE(channel_lock);
}
/**
|
