Nishanth Menon 7af0ea5dee tty: serial: omap: Increase max consoles and add check to prevent crash ... Increase the maximum number of consoles possible to 10 since DRA7 now has the maximum number of consoles possible. without doing this, for example, enabling DRA7 UART10 results in internal data structures and console cannot match up and we endup with a crash as follows: [ 1.903503] omap_uart 48424000.serial: [UART-1]: failure [serial_omap_probe]: -22 [ 1.911437] omap_uart: probe of 48424000.serial failed with error -22 [ 1.920379] Unable to handle kernel NULL pointer dereference at virtual address 00000004 [ 1.928894] pgd = c0004000 [ 1.931732] [00000004] *pgd=00000000 [ 1.935485] Internal error: Oops: 5 [#1] SMP ARM [ 1.940338] Modules linked in: [ 1.943542] CPU: 1 PID: 12 Comm: kworker/1:0 Tainted: G W 3.18.0-rc1-00001-g8821bc4-dirty #6 [ 1.953521] task: ed8a2d00 ti: ed8a4000 task.ti: ed8a4000 [ 1.959197] PC is at process_one_work+0x38/0x4a4 [ 1.964050] LR is at 0x0 [ 1.966705] pc : [<c00548e0>] lr : [<00000000>] psr: 40000093 [ 1.966705] sp : ed8a5ea8 ip : ed8a5ec8 fp : eeb9abc0 [ 1.978759] r10: ed8a4000 r9 : 00000008 r8 : ed842458 [ 1.984252] r7 : 00000000 r6 : eeb9abc0 r5 : ed842440 r4 : edbf26a8 [ 1.991119] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : 00000000 [ 1.997985] Flags: nZcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel [ 2.005767] Control: 10c5387d Table: 8000406a DAC: 00000015 [ 2.011810] Process kworker/1:0 (pid: 12, stack limit = 0xed8a4248) [ 2.018371] Stack: (0xed8a5ea8 to 0xed8a6000) [ 2.022949] 5ea0: 00000001 00000000 60000093 c008346c 00000001 ed8a5ec8 [ 2.031555] 5ec0: c0054de4 eeb9abc0 ed8a4000 ed842458 00000008 ed8a4000 eeb9abc0 ed842440 [ 2.040161] 5ee0: eeb9abc0 eeb9abf0 ed8a4000 ed842458 00000008 ed8a4000 eeb9abc0 c0054ec4 [ 2.048767] 5f00: ed8a4000 eeb9ac4c a0000053 00000000 ed845bc0 ed842440 c0054d80 00000000 [ 2.057342] 5f20: 00000000 00000000 00000000 c005999c 00000001 00000000 c05eaa64 ed842440 [ 2.065948] 5f40: 00000000 00000000 dead4ead ffffffff ffffffff c097c680 00000000 00000000 [ 2.074554] 5f60: c078acd4 ed8a5f64 ed8a5f64 00000000 00000000 dead4ead ffffffff ffffffff [ 2.083160] 5f80: c097c680 00000000 00000000 c078acd4 ed8a5f90 ed8a5f90 600000d3 ed845bc0 [ 2.091766] 5fa0: c00598d4 00000000 00000000 c000e668 00000000 00000000 00000000 00000000 [ 2.100341] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 2.108947] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 90005148 11010482 [ 2.117553] [<c00548e0>] (process_one_work) from [<c0054ec4>] (worker_thread+0x144/0x498) [ 2.126159] [<c0054ec4>] (worker_thread) from [<c005999c>] (kthread+0xc8/0xe4) [ 2.133758] [<c005999c>] (kthread) from [<c000e668>] (ret_from_fork+0x14/0x2c) [ 2.141357] Code: e1a04001 e1a05000 e893000f e31e0004 (e5978004) [ 2.147766] ---[ end trace 5798e2803311b69f ]--- <snip> The final solution is to transition off to use 8250 driver and no dependency on console structures and move away from omap-serial driver, hence no major cleanups are done for this driver, so add a simple check to prevent future crashes in a similar manner in case of platform with additional ports. Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-11-06 14:57:18 -08:00
..
accessibility
acpi	Merge branches 'acpi-scan' and 'acpi-ec'	2014-10-31 22:24:44 +01:00
amba	PM / Domains: Move dev_pm_domain_attach|detach() to pm_domain.h	2014-09-30 01:16:44 +02:00
ata	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2014-10-18 18:11:04 -07:00
atm	atm: simplify lanai.c by using module_pci_driver	2014-10-17 11:55:32 -04:00
auxdisplay
base	ACPI and power management fixes for 3.18-rc3	2014-10-31 19:08:25 -07:00
bcma	bcma: add another PCI ID of device with BCM43228	2014-10-23 14:02:06 -04:00
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc	2014-10-31 15:00:48 -07:00
bluetooth	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-10-13 11:28:42 +02:00
bus	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
cdrom
char	Return short read or 0 at end of a raw device, not EIO	2014-10-31 06:33:26 -04:00
clk	The clk tree changes for 3.18 are dominated by clock drivers. Mostly	2014-10-15 07:05:03 +02:00
clocksource	ARM/ARM64: arch-timer: fix arch_timer_probed logic	2014-10-26 20:50:00 +01:00
connector
cpufreq	cpufreq: cpufreq-dt: Restore default cpumask_setall(policy->cpus)	2014-10-27 23:27:35 +01:00
cpuidle	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2014-10-24 12:48:47 -07:00
crypto	crypto: LLVMLinux: Remove VLAIS from crypto/.../qat_algs.c	2014-10-14 10:51:23 +02:00
dca
devfreq	PM / devfreq: exynos: Enable building exynos PPMU as module	2014-09-29 20:22:36 +09:00
dio
dma	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2014-10-18 18:11:04 -07:00
dma-buf	dma-buf: don't open-code atomic_long_read()	2014-10-09 02:39:07 -04:00
edac	e7xxx_edac: Report CE events properly	2014-10-22 22:59:00 +02:00
eisa
extcon
firewire
firmware	Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-23 14:45:09 -07:00
fmc
gpio	This is the bulk of GPIO changes for the v3.18 development	2014-10-09 14:58:15 -04:00
gpu	drm/exynos: correct connector->dpms field before resuming	2014-11-03 01:51:28 +09:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2014-10-29 11:52:35 -07:00
hsi
hv
hwmon	hwmon: (menf21bmc) Include linux/err.h	2014-10-19 18:41:18 -07:00
hwspinlock
i2c	Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2014-10-19 12:50:44 -07:00
ide	Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block	2014-10-18 12:12:45 -07:00
idle
iio	First round of IIO fixes for the 3.18 cycle.	2014-10-25 10:09:39 +08:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-10-31 15:04:58 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2014-10-31 19:51:11 -07:00
iommu	IOMMU Updates for Linux v3.18	2014-10-15 07:23:49 +02:00
ipack
irqchip	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
isdn	isdn/gigaset: fix usb_gigaset write_cmd result race	2014-10-14 15:05:35 -04:00
leds	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds	2014-10-21 08:18:38 -07:00
lguest
macintosh
mailbox	Merge branch 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2014-10-21 11:21:19 -07:00
mcb
md	. fix DM's long-standing excessive use of memory by leveraging the new	2014-10-18 12:25:30 -07:00
media	[media] s5p-jpeg: Avoid -Wuninitialized warning in s5p_jpeg_parse_hdr	2014-10-24 09:36:59 -02:00
memory
memstick	memstick: r592: fix build warnings for !PM_SLEEP	2014-10-14 02:18:22 +02:00
message	SCSI for-linus on 20141007	2014-10-07 21:29:18 -04:00
mfd	Changes to existing drivers:	2014-10-15 06:58:16 +02:00
misc	cxl: Fix PSL error due to duplicate segment table entries	2014-10-28 19:52:52 +11:00
mmc	Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block	2014-10-18 12:12:45 -07:00
mtd	Three main MTD fixes for 3.18:	2014-11-02 14:45:52 -08:00
net	Merge tag 'master-2014-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless	2014-10-31 16:18:35 -04:00
nfc	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless	2014-10-07 14:48:29 -04:00
ntb	ntb: Adding split BAR support for Haswell platforms	2014-10-17 07:08:51 -04:00
nubus
of	drivers: of: add return value to of_reserved_mem_device_init()	2014-10-29 16:33:14 -07:00
oprofile
parisc	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
parport
pci	PCI updates for v3.18:	2014-10-31 18:48:29 -07:00
pcmcia
phy
pinctrl	This is the bulk of GPIO changes for the v3.18 development	2014-10-09 14:58:15 -04:00
platform	thinkpad_acpi: replace strnicmp with strncasecmp	2014-10-14 02:18:25 +02:00
pnp	PNP: replace strnicmp with strncasecmp	2014-10-14 02:18:25 +02:00
power	power: reset: at91-reset: fix power down register	2014-10-22 10:08:22 +02:00
powercap
pps
ps3
ptp
pwm	pwm: Changes for v3.18-rc1	2014-10-21 08:17:43 -07:00
rapidio
ras
regulator	Merge remote-tracking branch 'regulator/fix/rk808' into regulator-linus	2014-10-27 11:26:24 +00:00
remoteproc
reset
rpmsg
rtc	drivers/rtc/rtc-bq32k.c: fix register value	2014-10-29 16:33:14 -07:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2014-10-21 07:47:54 -07:00
sbus
scsi	libcxgbi : support ipv6 address host_param	2014-10-28 09:57:00 +01:00
sfi
sh
sn
soc	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
spi	Merge remote-tracking branches 'spi/fix/dw', 'spi/fix/orion', 'spi/fix/pl022', 'spi/fix/rockchip' and 'spi/fix/spidev' into spi-linus	2014-10-27 11:26:54 +00:00
spmi
ssb	This is the bulk of GPIO changes for the v3.18 development	2014-10-09 14:58:15 -04:00
staging	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-11-02 10:28:43 -08:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2014-10-21 13:06:38 -07:00
tc
thermal	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2014-10-24 11:21:43 -07:00
thunderbolt
tty	tty: serial: omap: Increase max consoles and add check to prevent crash	2014-11-06 14:57:18 -08:00
uio	uio: Export definition of struct uio_device	2014-10-02 21:35:54 -07:00
usb	USB-serial fixes for v3.18-rc3	2014-10-29 09:24:42 -07:00
uwb
vfio	IOMMU Updates for Linux v3.18	2014-10-15 07:23:49 +02:00
vhost
video	Merge branch '3.18/omapdss-fixes' into 3.18/fbdev-fixes	2014-10-30 14:53:49 +02:00
virt
virtio	One cc: stable commit, the rest are a series of minor cleanups which have	2014-10-18 10:25:09 -07:00
vlynq
vme
w1
watchdog	watchdog: meson: remove magic value for reboot	2014-10-20 21:09:17 +02:00
xen	xen/pci: Allocate memory for physdev_pci_device_add's optarr	2014-10-23 16:24:02 +01:00
zorro
Kconfig
Makefile