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| author | Tony Lindgren <tony@atomide.com> | 2020-01-15 07:25:26 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-15 14:46:54 +0100 |
| commit | 91b6dec32e5c25fbdbb564d1e5af23764ec17ef1 (patch) | |
| tree | f7dc3a4485d02cec478fa5280432b5539fd30720 /drivers/usb/musb/omap2430.c | |
| parent | 1b569569a955c53b00a04d86cd84e60efe4c14be (diff) | |
| download | lwn-91b6dec32e5c25fbdbb564d1e5af23764ec17ef1.tar.gz lwn-91b6dec32e5c25fbdbb564d1e5af23764ec17ef1.zip | |
usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue
We currently have musb_set_vbus() called from two different paths. Mostly
it gets called from the USB PHY via omap_musb_set_mailbox(), but in some
cases it can get also called from musb_stage0_irq() rather via .set_vbus:
(musb_set_host [musb_hdrc])
(omap2430_musb_set_vbus [omap2430])
(musb_stage0_irq [musb_hdrc])
(musb_interrupt [musb_hdrc])
(omap2430_musb_interrupt [omap2430])
This is racy and will not work with introducing generic helper functions
for musb_set_host() and musb_set_peripheral(). We want to get rid of the
busy loops in favor of usleep_range().
Let's just get rid of .set_vbus for omap2430 glue layer and let the PHY
code handle VBUS with musb_set_vbus(). Note that in the follow-up patch
we can completely remove omap2430_musb_set_vbus(), but let's do it in a
separate patch as this change may actually turn out to be needed as a
fix.
Reported-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Link: https://lore.kernel.org/r/20200115132547.364-5-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb/omap2430.c')
| -rw-r--r-- | drivers/usb/musb/omap2430.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index a3d2fef67746..5c93226e0e20 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -361,8 +361,6 @@ static const struct musb_platform_ops omap2430_ops = { .init = omap2430_musb_init, .exit = omap2430_musb_exit, - .set_vbus = omap2430_musb_set_vbus, - .enable = omap2430_musb_enable, .disable = omap2430_musb_disable, |