Lad Prabhakar f38278e9b8 serial: sh-sci: Initialize spinlock for uart console ... serial core expects the spinlock to be initialized by the controller driver for serial console, this patch makes sure the spinlock is initialized, fixing the below issue: [ 0.865928] BUG: spinlock bad magic on CPU#0, swapper/0/1 [ 0.865945] lock: sci_ports+0x0/0x4c80, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 [ 0.865955] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.8.0-rc1+ #112 [ 0.865961] Hardware name: HopeRun HiHope RZ/G2H with sub board (DT) [ 0.865968] Call trace: [ 0.865979] dump_backtrace+0x0/0x1d8 [ 0.865985] show_stack+0x14/0x20 [ 0.865996] dump_stack+0xe8/0x130 [ 0.866006] spin_dump+0x6c/0x88 [ 0.866012] do_raw_spin_lock+0xb0/0xf8 [ 0.866023] _raw_spin_lock_irqsave+0x80/0xa0 [ 0.866032] uart_add_one_port+0x3a4/0x4e0 [ 0.866039] sci_probe+0x504/0x7c8 [ 0.866048] platform_drv_probe+0x50/0xa0 [ 0.866059] really_probe+0xdc/0x330 [ 0.866066] driver_probe_device+0x58/0xb8 [ 0.866072] device_driver_attach+0x6c/0x90 [ 0.866078] __driver_attach+0x88/0xd0 [ 0.866085] bus_for_each_dev+0x74/0xc8 [ 0.866091] driver_attach+0x20/0x28 [ 0.866098] bus_add_driver+0x14c/0x1f8 [ 0.866104] driver_register+0x60/0x110 [ 0.866109] __platform_driver_register+0x40/0x48 [ 0.866119] sci_init+0x2c/0x34 [ 0.866127] do_one_initcall+0x88/0x428 [ 0.866137] kernel_init_freeable+0x2c0/0x328 [ 0.866143] kernel_init+0x10/0x108 [ 0.866150] ret_from_fork+0x10/0x18 Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Fixes: a3cb39d258 ("serial: core: Allow detach and attach serial device for console") Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/1593618100-2151-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-07-03 10:40:34 +02:00
..
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	serial: sh-sci: Initialize spinlock for uart console	2020-07-03 10:40:34 +02:00
vt	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
amiserial.c	Remove every trace of SERIAL_MAGIC	2019-11-13 19:01:14 +08:00
cyclades.c	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
ehv_bytechan.c	tty: evh_bytechan: Fix out of bounds accesses	2020-03-17 23:40:31 +11:00
goldfish.c
isicom.c	tty/isicom: remove redundant assignment to variable word_count	2019-09-04 12:43:44 +02:00
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	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
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	n_tty: Distribute switch variables for initialization	2020-02-23 20:14:50 +01:00
nozomi.c	tty: nozomi: Use scnprintf() for avoiding potential buffer overflow	2020-03-18 12:59:29 +01:00
pty.c
rocket_int.h
rocket.c	Merge 5.7-rc3 into tty-next	2020-04-27 09:33:21 +02:00
rocket.h
synclink_gt.c	TTY/Serial driver updates for 5.6-rc1	2020-01-29 10:13:27 -08:00
synclink.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-01-28 16:02:33 -08:00
synclinkmp.c	TTY/Serial driver updates for 5.6-rc1	2020-01-29 10:13:27 -08:00
sysrq.c	kernel: rename show_stack_loglvl() => show_stack()	2020-06-09 09:39:13 -07:00
tty_audit.c
tty_baudrate.c	tty: baudrate: SPARC supports few more baud rates	2020-01-22 10:23:26 +01:00
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_ldisc: simplify tty_ldisc_autoload initialization	2019-10-04 15:11:25 +02:00
tty_ldsem.c	locking/lockdep: Remove unused @nested argument from lock_release()	2019-10-09 12:46:10 +02:00
tty_mutex.c
tty_port.c	serdev: ttyport: restore client ops on deregistration	2020-02-10 12:26:44 -08:00
ttynull.c
vcc.c	sparc64: vcc: Fix error return code in vcc_probe()	2020-04-28 14:38:54 +02:00