diff options
| author | Magnus Damm <damm@opensource.se> | 2010-01-27 07:41:19 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-02-02 11:30:45 +0900 |
| commit | e5ff15bec96ba18698dae5de0bbf7e6a0653ca65 (patch) | |
| tree | d311f375b0297dc4e92c09a50f175de0979241a8 | |
| parent | e8708ef7e86a463b3a5b01d4a9abf16c8748b464 (diff) | |
| download | linux-exynos-e5ff15bec96ba18698dae5de0bbf7e6a0653ca65.tar.gz linux-exynos-e5ff15bec96ba18698dae5de0bbf7e6a0653ca65.tar.bz2 linux-exynos-e5ff15bec96ba18698dae5de0bbf7e6a0653ca65.zip | |
usb: r8a66597-hdc disable interrupts fix
This patch improves disable_controller() in the r8a66597-hdc
driver to disable all interrupts and clear status flags. It
also makes sure that disable_controller() is called during
probe(). This fixes the relatively rare case of unexpected
pending interrupts after kexec reboot.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | drivers/usb/host/r8a66597-hcd.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index b7a661c02bcd..0ceec123ddfd 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -216,8 +216,17 @@ static void disable_controller(struct r8a66597 *r8a66597) { int port; + /* disable interrupts */ r8a66597_write(r8a66597, 0, INTENB0); - r8a66597_write(r8a66597, 0, INTSTS0); + r8a66597_write(r8a66597, 0, INTENB1); + r8a66597_write(r8a66597, 0, BRDYENB); + r8a66597_write(r8a66597, 0, BEMPENB); + r8a66597_write(r8a66597, 0, NRDYENB); + + /* clear status */ + r8a66597_write(r8a66597, 0, BRDYSTS); + r8a66597_write(r8a66597, 0, NRDYSTS); + r8a66597_write(r8a66597, 0, BEMPSTS); for (port = 0; port < r8a66597->max_root_hub; port++) r8a66597_disable_port(r8a66597, port); @@ -2466,6 +2475,12 @@ static int __devinit r8a66597_probe(struct platform_device *pdev) r8a66597->rh_timer.data = (unsigned long)r8a66597; r8a66597->reg = (unsigned long)reg; + /* make sure no interrupts are pending */ + ret = r8a66597_clock_enable(r8a66597); + if (ret < 0) + goto clean_up3; + disable_controller(r8a66597); + for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); init_timer(&r8a66597->td_timer[i]); |