This code is using the wrong sizeof() so it does not allocate enough
memory. It allocates 32 bytes but 72 are required. That will lead to
memory corruption.
Fixes: ae07809255 ("usb: mtu3: add debugfs interface files")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/X8ikqc4Mo2/0G72j@mwanda
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mtu3_prb_regs is never changed and can therefore be made const.
This allows the compiler to put it in the text section instead of the
data section.
Before:
text data bss dec hex filename
19966 7120 0 27086 69ce drivers/usb/mtu3/mtu3_debugfs.o
After:
text data bss dec hex filename
20142 6992 0 27134 69fe drivers/usb/mtu3/mtu3_debugfs.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Because extcon is not allowed for new bindings, and the
dual role switch is supported by USB Role Switch,
especially for Type-C drivers, so register a USB Role
Switch to support the new way
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1567070558-29417-12-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It's not needed after [1] is applied, because usb_debug_root is created
by usb common core but not usbcore now.
[1] 812086d362 ("USB: move usb debugfs directory creation to the usb common core")
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When CONFIG_USB is not set, and CONFIG_USB_GADGET is set,
there is an issue:
ld:
drivers/usb/mtu3/mtu3_debugfs.o: in function 'ssusb_debugfs_create_root':
mtu3_debugfs.c:(.text+0xba3): undefined reference to 'usb_debug_root'
usb_debug_root is only built when CONFIG_USB is enabled, so here drop it
and use NULL instead.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Due to the separated debugfs files are added, move vbus and mode
debugfs interfaces related with dual-role switch from mtu3_dr.c
into mtu3_debugfs.c
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds more debugfs consumers. The debugfs entries read some
important registers, fifo status, QMU ring, endpoint status, and
IPPC probe interface to get internal status.
With these entries, users can check the registers, endpoint and
GPD used during run time.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
