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"val" can be negative, so we'd write before the start of the par->gpio.db[] array. Fixes: c296d5f9957c ("staging: fbtft: core support") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
FBTFT ========= Linux Framebuffer drivers for small TFT LCD display modules. The module 'fbtft' makes writing drivers for some of these displays very easy. Development is done on a Raspberry Pi running the Raspbian "wheezy" distribution. INSTALLATION Download kernel sources From Linux 3.15 cd drivers/video/fbdev/fbtft git clone https://github.com/notro/fbtft.git Add to drivers/video/fbdev/Kconfig: source "drivers/video/fbdev/fbtft/Kconfig" Add to drivers/video/fbdev/Makefile: obj-y += fbtft/ Before Linux 3.15 cd drivers/video git clone https://github.com/notro/fbtft.git Add to drivers/video/Kconfig: source "drivers/video/fbtft/Kconfig" Add to drivers/video/Makefile: obj-y += fbtft/ Enable driver(s) in menuconfig and build the kernel See wiki for more information: https://github.com/notro/fbtft/wiki Source: https://github.com/notro/fbtft/