diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-10-30 22:52:26 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-10-31 17:22:18 +0400 |
| commit | b18d26f6ad8f00ea5f7c6a12ea52627ca3c3c6e2 (patch) | |
| tree | 651526d8d433418664bcee887f6d1a60ee7946f7 /drivers/usb/musb/musb_core.h | |
| parent | af5ec14d40e0da1de17fcca2b41c76fae5c2cb9d (diff) | |
| download | linux-b18d26f6ad8f00ea5f7c6a12ea52627ca3c3c6e2.tar.xz | |
usb: musb: Perform only write access on MUSB_INTRTXE
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 16bit read access to MUSB_INTRTXE results in an 32bit read
access which also reads INTRRX and therefore may lose interrupts.
This patch uses a shadow register of MUSB_INTRTXE so we only perform
write access to it.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/musb_core.h')
| -rw-r--r-- | drivers/usb/musb/musb_core.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 60b92cbdc7f7..0cef3ceb52c3 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -288,7 +288,6 @@ struct musb_csr_regs { struct musb_context_registers { u8 power; - u16 intrtxe; u8 intrusbe; u16 frame; u8 index, testmode; @@ -314,6 +313,7 @@ struct musb { u16 hwvers; u16 intrrxe; + u16 intrtxe; /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */ #define MUSB_PORT_STAT_RESUME (1 << 31) |