Christophe Leroy 311eab8d59 tty: serial: cpm_uart: Fix behaviour for non existing GPIOs ... devm_gpiod_get_index() doesn't return NULL but -ENOENT when the requested GPIO doesn't exist, leading to the following messages: [ 2.742468] gpiod_direction_input: invalid GPIO (errorpointer) [ 2.748147] can't set direction for gpio #2: -2 [ 2.753081] gpiod_direction_input: invalid GPIO (errorpointer) [ 2.758724] can't set direction for gpio #3: -2 [ 2.763666] gpiod_direction_output: invalid GPIO (errorpointer) [ 2.769394] can't set direction for gpio #4: -2 [ 2.774341] gpiod_direction_input: invalid GPIO (errorpointer) [ 2.779981] can't set direction for gpio #5: -2 [ 2.784545] ff000a20.serial: ttyCPM1 at MMIO 0xfff00a20 (irq = 39, base_baud = 8250000) is a CPM UART Use devm_gpiod_get_index_optional() instead. At the same time, handle the error case and properly exit with an error. Fixes: 97cbaf2c82 ("tty: serial: cpm_uart: Convert to use GPIO descriptors") Cc: stable@vger.kernel.org Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/694a25fdce548c5ee8b060ef6a4b02746b8f25c0.1591986307.git.christophe.leroy@csgroup.eu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-06-27 13:50:51 +02:00
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hvc	tty: hvc_console, fix crashes on parallel open/close	2020-05-27 10:55:36 +02:00
ipwireless
serdev	serdev: Fix detection of UART devices on Apple machines.	2020-03-06 14:10:44 +01:00
serial	tty: serial: cpm_uart: Fix behaviour for non existing GPIOs	2020-06-27 13:50:51 +02:00
vt	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
amiserial.c
cyclades.c
ehv_bytechan.c	tty: evh_bytechan: Fix out of bounds accesses	2020-03-17 23:40:31 +11:00
goldfish.c
isicom.c
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile
mips_ejtag_fdc.c	tty: mips_ejtag_fdc: Mark expected switch fall-through	2020-03-07 09:52:02 +01:00
moxa.c
moxa.h
mxser.c	tty: mxser: make mxser_change_speed() return void	2020-05-15 14:47:05 +02:00
mxser.h
n_gsm.c	tty: n_gsm: Fix bogus i++ in gsm_data_kick	2020-05-19 16:19:54 +02:00
n_hdlc.c	n_hdlc_tty_read(): remove pointless access_ok()	2020-05-29 11:03:03 -04:00
n_null.c
n_r3964.c
n_tracerouter.c
n_tracesink.c
n_tracesink.h	tty: n_tracesink: Use the correct style for SPDX License Identifier	2020-03-18 13:01:31 +01:00
n_tty.c
nozomi.c	tty: nozomi: Use scnprintf() for avoiding potential buffer overflow	2020-03-18 12:59:29 +01:00
pty.c
rocket.c	Merge 5.7-rc3 into tty-next	2020-04-27 09:33:21 +02:00
rocket.h
rocket_int.h
synclink.c
synclink_gt.c
synclinkmp.c
sysrq.c	kernel: rename show_stack_loglvl() => show_stack()	2020-06-09 09:39:13 -07:00
tty_audit.c
tty_baudrate.c
tty_buffer.c
tty_io.c	tty: fix compat TIOCGSERIAL checking wrong function ptr	2020-03-18 13:15:13 +01:00
tty_ioctl.c
tty_jobctrl.c
tty_ldisc.c
tty_ldsem.c
tty_mutex.c
tty_port.c
ttynull.c
vcc.c	sparc64: vcc: Fix error return code in vcc_probe()	2020-04-28 14:38:54 +02:00