Thread (15 messages) 15 messages, 4 authors, 2019-01-17

Re: [PATCH v2 4/4] usb: musb: Add support for MediaTek musb controller

From: Min Guo <hidden>
Date: 2019-01-16 09:39:13
Also in: linux-devicetree, linux-mediatek, linux-usb, lkml

Hi Bin,

On Tue, 2019-01-15 at 14:38 -0600, Bin Liu wrote:
Hi Min,

very close, thanks.
Below I tried to explain a further cleanup in musb_clearb/w() and
musb_get/set_toggle() implementation. Please let me know if it is not
clear.

Basically, we don't need musb_default_clearb/w(), just assign the
musb_io function pointers to musb_readb/w().

Then the mtk platform musb_clearb/w() calls musb_readb/w() and
musb_writeb/w() to handle W1C.
Sorry to bother you again, I encounter a problem when prepare the patch.
The define of musb_clearb/w and musb_readb/w are difference as follow,
and cannot be directly assigned:
u8/u16 (*readb/w)(const void __iomem *addr, unsigned offset)
void (*clearb/w)(void __iomem *addr, unsigned int offset)) 

if modify clearb/w as:
u8/u16 (*clearb/w)(const void __iomem *addr, unsigned int offset)) 
then musb_clear needs writeb/w the const addr.
Can I delete const in (*readb/w)?
regards,
-Bin.


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help