This is another variant of:
USB gadget fsl: request cacheline aligned buffer
The fsl udc driver allocates a buffer for small requests. The
driver then calls dma_inv_range later on it. This buffer happens
to be not cacheline aligned which means that a dma_inv_range can
corrupt other memory around the buffer.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
[mkl: use dma_alloc]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The idea is to panic() when there is no memory available for normal
operation. Exception: code which can consume arbitrary amount of RAM
(example: files allocated in ramfs) must report error instead of panic().
This patch also fixes code which didn't check for NULL from malloc() etc.
Usage: malloc(), memalign() return NULL when out of RAM.
xmalloc(), xmemalign() always return non-NULL or panic().
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds support for USB devices. It uses
the Linux Kernel gadget API. Along with this patch
comes driver support for the Freescale (arc) USB OTG
Core and USB Device Firmware Update (DFU)
The serial gadget support is not working at the moment.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Krzysztof Halasa