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authorLennert Buytenhek <buytenh@wantstofly.org>2009-07-16 12:44:45 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-08-20 11:38:06 -0400
commitd4b7057052236e81ab0788cc8df306dc02b0e7be (patch)
treed5d25af33be54cafd251d56d7262f12bcce159f6 /drivers
parent76266b2ad38c33fb2c1475cfeb35ed070adaba2b (diff)
mwl8k: don't touch 'command done' interrupt during firmware load
Since firmware load commands don't generate 'command done' interrupts like normal commands do, polling for command done interrupts just unnecessarily slows down the firmware load process. Removing this bit of code speeds up loading a typical firmware image from 840 msec to 180 msec. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/mwl8k.c24
1 files changed, 1 insertions, 23 deletions
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 5aa80420c0d..cc0aa80ca87 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -411,7 +411,6 @@ mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
{
void __iomem *regs = priv->regs;
dma_addr_t dma_addr;
- int rc;
int loops;
dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
@@ -425,7 +424,6 @@ mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
iowrite32(MWL8K_H2A_INT_DUMMY,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- rc = -ETIMEDOUT;
loops = 1000;
do {
u32 int_code;
@@ -433,7 +431,6 @@ mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
iowrite32(0, regs + MWL8K_HIU_INT_CODE);
- rc = 0;
break;
}
@@ -442,26 +439,7 @@ mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
- /*
- * Clear 'command done' interrupt bit.
- */
- loops = 1000;
- do {
- u32 status;
-
- status = ioread32(priv->regs +
- MWL8K_HIU_A2H_INTERRUPT_STATUS);
- if (status & MWL8K_A2H_INT_OPC_DONE) {
- iowrite32(~MWL8K_A2H_INT_OPC_DONE,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- break;
- }
-
- udelay(1);
- } while (--loops);
-
- return rc;
+ return loops ? 0 : -ETIMEDOUT;
}
static int mwl8k_load_fw_image(struct mwl8k_priv *priv,