From: Karsten Wiese <[EMAIL PROTECTED]>
Subject: [PATCH] USB: EHCI: Refactor "if (handshake()) state = HC_STATE_HALT"
Refactor the EHCI "if (handshake()) state = HC_STATE_HALT" idiom,
which appears 4 times, by replacing it with calls to a new function
called handshake_on_error_set_halt(). Saves a few bytes too.
Signed-off-by: Karsten Wiese <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
---
drivers/usb/host/ehci-hcd.c | 23 ++++++++++++++---------
drivers/usb/host/ehci-sched.c | 14 ++++++--------
2 files changed, 20 insertions(+), 17 deletions(-)
--- g26.orig/drivers/usb/host/ehci-hcd.c 2008-02-16 09:33:29.000000000
-0800
+++ g26/drivers/usb/host/ehci-hcd.c 2008-02-16 13:42:16.000000000 -0800
@@ -145,6 +145,16 @@ static int handshake (struct ehci_hcd *e
return -ETIMEDOUT;
}
+static int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem
*ptr,
+ u32 mask, u32 done, int usec)
+{
+ int error = handshake(ehci, ptr, mask, done, usec);
+ if (error)
+ ehci_to_hcd(ehci)->state = HC_STATE_HALT;
+
+ return error;
+}
+
/* force HC to halt state from unknown (EHCI spec section 2.3) */
static int ehci_halt (struct ehci_hcd *ehci)
{
@@ -217,11 +227,9 @@ static void ehci_quiesce (struct ehci_hc
/* wait for any schedule enables/disables to take effect */
temp = ehci_readl(ehci, &ehci->regs->command) << 10;
temp &= STS_ASS | STS_PSS;
- if (handshake (ehci, &ehci->regs->status, STS_ASS | STS_PSS,
- temp, 16 * 125) != 0) {
- ehci_to_hcd(ehci)->state = HC_STATE_HALT;
+ if (handshake_on_error_set_halt(ehci, &ehci->regs->status,
+ STS_ASS | STS_PSS, temp, 16 * 125))
return;
- }
/* then disable anything that's still active */
temp = ehci_readl(ehci, &ehci->regs->command);
@@ -229,11 +237,8 @@ static void ehci_quiesce (struct ehci_hc
ehci_writel(ehci, temp, &ehci->regs->command);
/* hardware can take 16 microframes to turn off ... */
- if (handshake (ehci, &ehci->regs->status, STS_ASS | STS_PSS,
- 0, 16 * 125) != 0) {
- ehci_to_hcd(ehci)->state = HC_STATE_HALT;
- return;
- }
+ handshake_on_error_set_halt(ehci, &ehci->regs->status,
+ STS_ASS | STS_PSS, 0, 16 * 125);
}
/*-------------------------------------------------------------------------*/
--- g26.orig/drivers/usb/host/ehci-sched.c 2008-02-16 09:33:29.000000000
-0800
+++ g26/drivers/usb/host/ehci-sched.c 2008-02-16 13:42:16.000000000 -0800
@@ -440,11 +440,10 @@ static int enable_periodic (struct ehci_
/* did clearing PSE did take effect yet?
* takes effect only at frame boundaries...
*/
- status = handshake(ehci, &ehci->regs->status, STS_PSS, 0, 9 * 125);
- if (status != 0) {
- ehci_to_hcd(ehci)->state = HC_STATE_HALT;
+ status = handshake_on_error_set_halt(ehci, &ehci->regs->status,
+ STS_PSS, 0, 9 * 125);
+ if (status)
return status;
- }
cmd = ehci_readl(ehci, &ehci->regs->command) | CMD_PSE;
ehci_writel(ehci, cmd, &ehci->regs->command);
@@ -465,11 +464,10 @@ static int disable_periodic (struct ehci
/* did setting PSE not take effect yet?
* takes effect only at frame boundaries...
*/
- status = handshake(ehci, &ehci->regs->status, STS_PSS, STS_PSS, 9 *
125);
- if (status != 0) {
- ehci_to_hcd(ehci)->state = HC_STATE_HALT;
+ status = handshake_on_error_set_halt(ehci, &ehci->regs->status,
+ STS_PSS, STS_PSS, 9 * 125);
+ if (status)
return status;
- }
cmd = ehci_readl(ehci, &ehci->regs->command) & ~CMD_PSE;
ehci_writel(ehci, cmd, &ehci->regs->command);
-
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