Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 22:51:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

USB: musb: fix init oops crash with static FIFO config

Browse Source 
Correct musb_read_fifosize() and musb_configure_ep0() functions
for the #ifndef BLACKFIN branch when the silicon uses static FIFO
configuration.  (Most current silicon configures this controller
to use dynamic FIFO configuration; some parts from ST don't, like
the STM STA2062.)

Signed-off-by: Giuseppe	GORGOGLIONE <giuseppe.gorgoglione@st.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Giuseppe GORGOGLIONE 2009-02-24 15:27:34 -08:00 committed by Greg Kroah-Hartman
parent 1e0320f0d4
commit 322337168f
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/musb/musb_core.h
View File

@ -478,10 +478,11 @@ static inline void musb_configure_ep0(struct musb *musb)
static inline int musb_read_fifosize(struct musb *musb,
struct musb_hw_ep *hw_ep, u8 epnum)
{
void *mbase = musb->mregs;
u8 reg = 0;
/* read from core using indexed model */
reg = musb_readb(hw_ep->regs, 0x10 + MUSB_FIFOSIZE);
reg = musb_readb(mbase, MUSB_EP_OFFSET(epnum, MUSB_FIFOSIZE));
/* 0's returned when no more endpoints */
if (!reg)
return -ENODEV;
@ -508,6 +509,7 @@ static inline void musb_configure_ep0(struct musb *musb)
{
musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
musb->endpoints[0].is_shared_fifo = true;
}
#endif /* CONFIG_BLACKFIN */