* [U-Boot] [PATCH 1/2] usb: Use get_unaligned() in usb_endpoint_maxp() for wMaxPacketSize
@ 2013-05-13 10:23 Vivek Gautam
2013-05-13 10:23 ` [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access " Vivek Gautam
0 siblings, 1 reply; 8+ messages in thread
From: Vivek Gautam @ 2013-05-13 10:23 UTC (permalink / raw)
To: u-boot
Use unaligned access to fetch wMaxPacketSize in usb_endpoint_maxp()
api.
In its absence we see following data abort message:
==============================================================
data abort
MAYBE you should read doc/README.arm-unaligned-accesses
pc : [<bf794e24>] lr : [<bf794e1c>]
sp : bf37c7b0 ip : 0000002f fp : 00000000
r10: 00000000 r9 : 00000002 r8 : bf37fecc
r7 : 00000001 r6 : bf7d8931 r5 : bf7d891c r4 : bf7d8800
r3 : bf7d65b0 r2 : 00000002 r1 : bf7d65b4 r0 : 00000027
Flags: nZCv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
resetting ...
==============================================================
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Ilya Yanok <ilya.yanok@cogentembedded.com>
Cc: Marek Vasut <marex@denx.de>
---
Based on u-boot-usb/next. Tested with 'u-boot-usb/master' branch.
include/linux/usb/ch9.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index d1d732c..bd48704 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -35,6 +35,7 @@
#include <linux/types.h> /* __u8 etc */
#include <asm/byteorder.h> /* le16_to_cpu */
+#include <asm/unaligned.h> /* get_unaligned() */
/*-------------------------------------------------------------------------*/
@@ -596,7 +597,7 @@ static inline int usb_endpoint_is_isoc_out(
*/
static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
{
- return __le16_to_cpu(epd->wMaxPacketSize);
+ return __le16_to_cpu(get_unaligned(&epd->wMaxPacketSize));
}
static inline int usb_endpoint_interrupt_type(
--
1.7.6.5
^ permalink raw reply related [flat|nested] 8+ messages in thread* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:23 [U-Boot] [PATCH 1/2] usb: Use get_unaligned() in usb_endpoint_maxp() for wMaxPacketSize Vivek Gautam @ 2013-05-13 10:23 ` Vivek Gautam 2013-05-13 10:50 ` Kyungmin Park ` (3 more replies) 0 siblings, 4 replies; 8+ messages in thread From: Vivek Gautam @ 2013-05-13 10:23 UTC (permalink / raw) To: u-boot Use get_unaligned() while fetching wMaxPacketSize to avoid voilating any alignment rules. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Piotr Wilczek <p.wilczek@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lukasz Dalek <luk0104@gmail.com> Cc: Marek Vasut <marex@denx.de> --- Just did a build test on u-boot-usb/master branch. Need to be tested further. Based on u-boot-usb/next. drivers/usb/gadget/f_mass_storage.c | 3 ++- drivers/usb/gadget/pxa25x_udc.c | 13 +++++++------ 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index c28866f..45bc132 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -2261,7 +2261,8 @@ reset: if (rc) goto reset; fsg->bulk_out_enabled = 1; - common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize); + common->bulk_out_maxpacket = + le16_to_cpu(get_unaligned(&d->wMaxPacketSize)); clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); /* Allocate the requests */ diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 9ce98f0..085503d 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -314,7 +314,8 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, if (!_ep || !desc || ep->desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT || ep->bEndpointAddress != desc->bEndpointAddress - || ep->fifo_size < le16_to_cpu(desc->wMaxPacketSize)) { + || ep->fifo_size < + le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) { printf("%s, bad ep or descriptor\n", __func__); return -EINVAL; } @@ -329,9 +330,9 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, /* hardware _could_ do smaller, but driver doesn't */ if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK - && le16_to_cpu(desc->wMaxPacketSize) + && le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) != BULK_FIFO_SIZE) - || !desc->wMaxPacketSize) { + || !get_unaligned(&desc->wMaxPacketSize)) { printf("%s, bad %s maxpacket\n", __func__, _ep->name); return -ERANGE; } @@ -345,7 +346,7 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, ep->desc = desc; ep->stopped = 0; ep->pio_irqs = 0; - ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); + ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)); /* flush fifo (mostly for OUT buffers) */ pxa25x_ep_fifo_flush(_ep); @@ -485,7 +486,7 @@ write_fifo(struct pxa25x_ep *ep, struct pxa25x_request *req) { unsigned max; - max = le16_to_cpu(ep->desc->wMaxPacketSize); + max = le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize)); do { unsigned count; int is_last, is_short; @@ -766,7 +767,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) */ if (unlikely(ep->bmAttributes == USB_ENDPOINT_XFER_ISOC && req->req.length > - le16_to_cpu(ep->desc->wMaxPacketSize))) + le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize)))) return -EMSGSIZE; debug_cond(NOISY, "%s queue req %p, len %d buf %p\n", -- 1.7.6.5 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:23 ` [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access " Vivek Gautam @ 2013-05-13 10:50 ` Kyungmin Park 2013-05-13 11:46 ` Vivek Gautam 2013-05-13 11:56 ` Albert ARIBAUD 2013-05-13 12:03 ` Łukasz Dałek ` (2 subsequent siblings) 3 siblings, 2 replies; 8+ messages in thread From: Kyungmin Park @ 2013-05-13 10:50 UTC (permalink / raw) To: u-boot On Mon, May 13, 2013 at 7:23 PM, Vivek Gautam <gautam.vivek@samsung.com>wrote: > Use get_unaligned() while fetching wMaxPacketSize to avoid > voilating any alignment rules. > It's another story, can we get performance gain with unaligned access feature? In case of kernel, we got some gains. Anyway, good job! Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > Cc: Lukasz Majewski <l.majewski@samsung.com> > Cc: Piotr Wilczek <p.wilczek@samsung.com> > Cc: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Lukasz Dalek <luk0104@gmail.com> > Cc: Marek Vasut <marex@denx.de> > --- > > Just did a build test on u-boot-usb/master branch. > Need to be tested further. > > Based on u-boot-usb/next. > > drivers/usb/gadget/f_mass_storage.c | 3 ++- > drivers/usb/gadget/pxa25x_udc.c | 13 +++++++------ > 2 files changed, 9 insertions(+), 7 deletions(-) > > diff --git a/drivers/usb/gadget/f_mass_storage.c > b/drivers/usb/gadget/f_mass_storage.c > index c28866f..45bc132 100644 > --- a/drivers/usb/gadget/f_mass_storage.c > +++ b/drivers/usb/gadget/f_mass_storage.c > @@ -2261,7 +2261,8 @@ reset: > if (rc) > goto reset; > fsg->bulk_out_enabled = 1; > - common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize); > + common->bulk_out_maxpacket = > + > le16_to_cpu(get_unaligned(&d->wMaxPacketSize)); > clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); > > /* Allocate the requests */ > diff --git a/drivers/usb/gadget/pxa25x_udc.c > b/drivers/usb/gadget/pxa25x_udc.c > index 9ce98f0..085503d 100644 > --- a/drivers/usb/gadget/pxa25x_udc.c > +++ b/drivers/usb/gadget/pxa25x_udc.c > @@ -314,7 +314,8 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, > if (!_ep || !desc || ep->desc || _ep->name == ep0name > || desc->bDescriptorType != USB_DT_ENDPOINT > || ep->bEndpointAddress != desc->bEndpointAddress > - || ep->fifo_size < > le16_to_cpu(desc->wMaxPacketSize)) { > + || ep->fifo_size < > + > le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) { > printf("%s, bad ep or descriptor\n", __func__); > return -EINVAL; > } > @@ -329,9 +330,9 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, > > /* hardware _could_ do smaller, but driver doesn't */ > if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK > - && le16_to_cpu(desc->wMaxPacketSize) > + && > le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) > != BULK_FIFO_SIZE) > - || !desc->wMaxPacketSize) { > + || !get_unaligned(&desc->wMaxPacketSize)) { > printf("%s, bad %s maxpacket\n", __func__, _ep->name); > return -ERANGE; > } > @@ -345,7 +346,7 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, > ep->desc = desc; > ep->stopped = 0; > ep->pio_irqs = 0; > - ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); > + ep->ep.maxpacket = > le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)); > > /* flush fifo (mostly for OUT buffers) */ > pxa25x_ep_fifo_flush(_ep); > @@ -485,7 +486,7 @@ write_fifo(struct pxa25x_ep *ep, struct pxa25x_request > *req) > { > unsigned max; > > - max = le16_to_cpu(ep->desc->wMaxPacketSize); > + max = le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize)); > do { > unsigned count; > int is_last, is_short; > @@ -766,7 +767,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request > *_req, gfp_t gfp_flags) > */ > if (unlikely(ep->bmAttributes == USB_ENDPOINT_XFER_ISOC > && req->req.length > > - le16_to_cpu(ep->desc->wMaxPacketSize))) > + > le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize)))) > return -EMSGSIZE; > > debug_cond(NOISY, "%s queue req %p, len %d buf %p\n", > -- > 1.7.6.5 > > _______________________________________________ > U-Boot mailing list > U-Boot at lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:50 ` Kyungmin Park @ 2013-05-13 11:46 ` Vivek Gautam 2013-05-13 11:56 ` Albert ARIBAUD 1 sibling, 0 replies; 8+ messages in thread From: Vivek Gautam @ 2013-05-13 11:46 UTC (permalink / raw) To: u-boot Hi, On Mon, May 13, 2013 at 4:20 PM, Kyungmin Park <kmpark@infradead.org> wrote: > On Mon, May 13, 2013 at 7:23 PM, Vivek Gautam <gautam.vivek@samsung.com>wrote: > >> Use get_unaligned() while fetching wMaxPacketSize to avoid >> voilating any alignment rules. typo here s/voilating/violating >> > > It's another story, can we get performance gain with unaligned access > feature? In case of kernel, we got some gains. This change was necessary since we get data abort if we try to fetch wMaxPacketSize which violates the natural alignment rules being a member of "struct usb_endpoint_descriptor". I am not sure of the performance gains with this. However, if you can guide me how to measure that, we can get the numbers if any. > > Anyway, good job! Thanks ! > > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > >> >> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> >> Cc: Lukasz Majewski <l.majewski@samsung.com> >> Cc: Piotr Wilczek <p.wilczek@samsung.com> >> Cc: Kyungmin Park <kyungmin.park@samsung.com> >> Cc: Lukasz Dalek <luk0104@gmail.com> >> Cc: Marek Vasut <marex@denx.de> >> --- >> >> Just did a build test on u-boot-usb/master branch. >> Need to be tested further. >> >> Based on u-boot-usb/next. >> >> drivers/usb/gadget/f_mass_storage.c | 3 ++- >> drivers/usb/gadget/pxa25x_udc.c | 13 +++++++------ >> 2 files changed, 9 insertions(+), 7 deletions(-) >> >> diff --git a/drivers/usb/gadget/f_mass_storage.c >> b/drivers/usb/gadget/f_mass_storage.c >> index c28866f..45bc132 100644 >> --- a/drivers/usb/gadget/f_mass_storage.c >> +++ b/drivers/usb/gadget/f_mass_storage.c >> @@ -2261,7 +2261,8 @@ reset: >> if (rc) >> goto reset; >> fsg->bulk_out_enabled = 1; >> - common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize); >> + common->bulk_out_maxpacket = >> + >> le16_to_cpu(get_unaligned(&d->wMaxPacketSize)); >> clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); >> >> /* Allocate the requests */ >> diff --git a/drivers/usb/gadget/pxa25x_udc.c >> b/drivers/usb/gadget/pxa25x_udc.c >> index 9ce98f0..085503d 100644 >> --- a/drivers/usb/gadget/pxa25x_udc.c >> +++ b/drivers/usb/gadget/pxa25x_udc.c >> @@ -314,7 +314,8 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, >> if (!_ep || !desc || ep->desc || _ep->name == ep0name >> || desc->bDescriptorType != USB_DT_ENDPOINT >> || ep->bEndpointAddress != desc->bEndpointAddress >> - || ep->fifo_size < >> le16_to_cpu(desc->wMaxPacketSize)) { >> + || ep->fifo_size < >> + >> le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) { >> printf("%s, bad ep or descriptor\n", __func__); >> return -EINVAL; >> } >> @@ -329,9 +330,9 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, >> >> /* hardware _could_ do smaller, but driver doesn't */ >> if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK >> - && le16_to_cpu(desc->wMaxPacketSize) >> + && >> le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) >> != BULK_FIFO_SIZE) >> - || !desc->wMaxPacketSize) { >> + || !get_unaligned(&desc->wMaxPacketSize)) { >> printf("%s, bad %s maxpacket\n", __func__, _ep->name); >> return -ERANGE; >> } >> @@ -345,7 +346,7 @@ static int pxa25x_ep_enable(struct usb_ep *_ep, >> ep->desc = desc; >> ep->stopped = 0; >> ep->pio_irqs = 0; >> - ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); >> + ep->ep.maxpacket = >> le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)); >> >> /* flush fifo (mostly for OUT buffers) */ >> pxa25x_ep_fifo_flush(_ep); >> @@ -485,7 +486,7 @@ write_fifo(struct pxa25x_ep *ep, struct pxa25x_request >> *req) >> { >> unsigned max; >> >> - max = le16_to_cpu(ep->desc->wMaxPacketSize); >> + max = le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize)); >> do { >> unsigned count; >> int is_last, is_short; >> @@ -766,7 +767,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request >> *_req, gfp_t gfp_flags) >> */ >> if (unlikely(ep->bmAttributes == USB_ENDPOINT_XFER_ISOC >> && req->req.length > >> - le16_to_cpu(ep->desc->wMaxPacketSize))) >> + >> le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize)))) >> return -EMSGSIZE; >> >> debug_cond(NOISY, "%s queue req %p, len %d buf %p\n", >> -- >> 1.7.6.5 >> >> _______________________________________________ >> U-Boot mailing list >> U-Boot at lists.denx.de >> http://lists.denx.de/mailman/listinfo/u-boot >> > > _______________________________________________ > U-Boot mailing list > U-Boot at lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > -- Best Regards Vivek ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:50 ` Kyungmin Park 2013-05-13 11:46 ` Vivek Gautam @ 2013-05-13 11:56 ` Albert ARIBAUD 1 sibling, 0 replies; 8+ messages in thread From: Albert ARIBAUD @ 2013-05-13 11:56 UTC (permalink / raw) To: u-boot Hi Kyungmin, On Mon, 13 May 2013 19:50:28 +0900, Kyungmin Park <kmpark@infradead.org> wrote: > On Mon, May 13, 2013 at 7:23 PM, Vivek Gautam <gautam.vivek@samsung.com>wrote: > > > Use get_unaligned() while fetching wMaxPacketSize to avoid > > voilating any alignment rules. > > > > It's another story, can we get performance gain with unaligned access > feature? In case of kernel, we got some gains. Please do not forget that U-Boot does not run on ARMv7+ only; it runs on many ARM generations and on many non-ARM architectures too. Some of these targets have a severe penalty on unaligned access; some cannot even perform unaligned accesses. File drivers/usb/gadget/f_mass_storage.c is generic and must build and run for such targets too. The best approach is to properly align fields wherever possible, and when not possible, to use unaligned access macros (and if posisble detect unaligned accesses at runtime). Amicalement, -- Albert. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:23 ` [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access " Vivek Gautam 2013-05-13 10:50 ` Kyungmin Park @ 2013-05-13 12:03 ` Łukasz Dałek 2013-05-14 13:37 ` Piotr Wilczek 2013-05-14 13:49 ` Marek Vasut 3 siblings, 0 replies; 8+ messages in thread From: Łukasz Dałek @ 2013-05-13 12:03 UTC (permalink / raw) To: u-boot On 13.05.2013 12:23, Vivek Gautam wrote: > Use get_unaligned() while fetching wMaxPacketSize to avoid > voilating any alignment rules. > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > Cc: Lukasz Majewski <l.majewski@samsung.com> > Cc: Piotr Wilczek <p.wilczek@samsung.com> > Cc: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Lukasz Dalek <luk0104@gmail.com> > Cc: Marek Vasut <marex@denx.de> > --- > > Just did a build test on u-boot-usb/master branch. > Need to be tested further. > > Based on u-boot-usb/next. > > drivers/usb/gadget/f_mass_storage.c | 3 ++- > drivers/usb/gadget/pxa25x_udc.c | 13 +++++++------ > 2 files changed, 9 insertions(+), 7 deletions(-) Tested pxa25x_udc.c on u-boot/master on h2200 (PXA255) and works fine. Yours sincerely, Lukasz Dalek ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:23 ` [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access " Vivek Gautam 2013-05-13 10:50 ` Kyungmin Park 2013-05-13 12:03 ` Łukasz Dałek @ 2013-05-14 13:37 ` Piotr Wilczek 2013-05-14 13:49 ` Marek Vasut 3 siblings, 0 replies; 8+ messages in thread From: Piotr Wilczek @ 2013-05-14 13:37 UTC (permalink / raw) To: u-boot > -----Original Message----- > From: Vivek Gautam [mailto:gautam.vivek at samsung.com] > Sent: Monday, May 13, 2013 12:24 PM > To: u-boot at lists.denx.de > Cc: gautam.vivek at samsung.com; Lukasz Majewski; Piotr Wilczek; Kyungmin > Park; Lukasz Dalek; Marek Vasut > Subject: [PATCH 2/2] usb: gadget: Use unaligned access for > wMaxPacketSize > > Use get_unaligned() while fetching wMaxPacketSize to avoid voilating > any alignment rules. > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > Cc: Lukasz Majewski <l.majewski@samsung.com> > Cc: Piotr Wilczek <p.wilczek@samsung.com> > Cc: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Lukasz Dalek <luk0104@gmail.com> > Cc: Marek Vasut <marex@denx.de> > --- > > Just did a build test on u-boot-usb/master branch. > Need to be tested further. > > Based on u-boot-usb/next. > > drivers/usb/gadget/f_mass_storage.c | 3 ++- > drivers/usb/gadget/pxa25x_udc.c | 13 +++++++------ > 2 files changed, 9 insertions(+), 7 deletions(-) > Tested 'f_mass_storage.c' on u-boot/samsung. It works fine with or without this patch on Trats2. Best regards, Piotr Wilczek ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access for wMaxPacketSize 2013-05-13 10:23 ` [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access " Vivek Gautam ` (2 preceding siblings ...) 2013-05-14 13:37 ` Piotr Wilczek @ 2013-05-14 13:49 ` Marek Vasut 3 siblings, 0 replies; 8+ messages in thread From: Marek Vasut @ 2013-05-14 13:49 UTC (permalink / raw) To: u-boot Dear Vivek Gautam, > Use get_unaligned() while fetching wMaxPacketSize to avoid > voilating any alignment rules. > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > Cc: Lukasz Majewski <l.majewski@samsung.com> > Cc: Piotr Wilczek <p.wilczek@samsung.com> > Cc: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Lukasz Dalek <luk0104@gmail.com> > Cc: Marek Vasut <marex@denx.de> I'll pick both, thanks. Best regards, Marek Vasut ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-05-14 13:49 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-05-13 10:23 [U-Boot] [PATCH 1/2] usb: Use get_unaligned() in usb_endpoint_maxp() for wMaxPacketSize Vivek Gautam 2013-05-13 10:23 ` [U-Boot] [PATCH 2/2] usb: gadget: Use unaligned access " Vivek Gautam 2013-05-13 10:50 ` Kyungmin Park 2013-05-13 11:46 ` Vivek Gautam 2013-05-13 11:56 ` Albert ARIBAUD 2013-05-13 12:03 ` Łukasz Dałek 2013-05-14 13:37 ` Piotr Wilczek 2013-05-14 13:49 ` Marek Vasut
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