Commit Graph

4 Commits

Author SHA1 Message Date
Russell King f1f05ee1b3 ARM: pxa/lubbock: switch PCMCIA to MAX1600 library
As Lubbock now provides GPIOs via gpiolib for controlling the socket
power, we can use the MAX1600 driver.  Switch Lubbock to use this
driver, which simplifies the code.

Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2018-12-04 22:37:38 +00:00
Robert Jarzmik 817ed5748e pcmcia: lubbock: fix sockets configuration
On lubbock board, the probe of the driver crashes by dereferencing very
early a platform_data structure which is not set, in
pxa2xx_configure_sockets().

The stack fixed is :
[    0.244353] SA1111 Microprocessor Companion Chip: silicon revision 1, metal revision 1
[    0.256321] sa1111 sa1111: Providing IRQ336-390
[    0.340899] clocksource: Switched to clocksource oscr0
[    0.472263] Unable to handle kernel NULL pointer dereference at virtual address 00000004
[    0.480469] pgd = c0004000
[    0.483432] [00000004] *pgd=00000000
[    0.487105] Internal error: Oops: f5 [#1] ARM
[    0.491497] Modules linked in:
[    0.494650] CPU: 0 PID: 1 Comm: swapper Not tainted 4.8.0-rc3-00080-g1aaa68426f0c-dirty #2068
[    0.503229] Hardware name: Intel DBPXA250 Development Platform (aka Lubbock)
[    0.510344] task: c3e42000 task.stack: c3e44000
[    0.514984] PC is at pxa2xx_configure_sockets+0x4/0x24 (drivers/pcmcia/pxa2xx_base.c:227)
[    0.520193] LR is at pcmcia_lubbock_init+0x1c/0x38
[    0.525079] pc : [<c0247c30>]    lr : [<c02479b0>]    psr: a0000053
[    0.525079] sp : c3e45e70  ip : 100019ff  fp : 00000000
[    0.536651] r10: c0828900  r9 : c0434838  r8 : 00000000
[    0.541953] r7 : c0820700  r6 : c0857b30  r5 : c3ec1400  r4 : c0820758
[    0.548549] r3 : 00000000  r2 : 0000000c  r1 : c3c09c40  r0 : c3ec1400
[    0.555154] Flags: NzCv  IRQs on  FIQs off  Mode SVC_32  ISA ARM  Segment none
[    0.562450] Control: 0000397f  Table: a0004000  DAC: 00000053
[    0.568257] Process swapper (pid: 1, stack limit = 0xc3e44190)
[    0.574154] Stack: (0xc3e45e70 to 0xc3e46000)
[    0.578610] 5e60:                                     c4849800 00000000 c3ec1400 c024769c
[    0.586928] 5e80: 00000000 c3ec140c c3c0ee0c c3ec1400 c3ec1434 c020c410 c3ec1400 c3ec1434
[    0.595244] 5ea0: c0820700 c080b408 c0828900 c020c5f8 00000000 c0820700 c020c578 c020ac5c
[    0.603560] 5ec0: c3e687cc c3e71e10 c0820700 00000000 c3c02de0 c020bae4 c03c62f7 c03c62f7
[    0.611872] 5ee0: c3e68780 c0820700 c042e034 00000000 c043c440 c020cdec c080b408 00000005
[    0.620188] 5f00: c042e034 c00096c0 c0034440 c01c730c 20000053 ffffffff 00000000 00000000
[    0.628502] 5f20: 00000000 c3ffcb87 c3ffcb90 c00346ac c3e66ba0 c03f7914 00000092 00000005
[    0.636811] 5f40: 00000005 c03f847c 00000091 c03f847c 00000000 00000005 c0434828 00000005
[    0.645125] 5f60: c043482c 00000092 c043c440 c0828900 c0434838 c0418d2c 00000005 00000005
[    0.653430] 5f80: 00000000 c041858c 00000000 c032e9f0 00000000 00000000 00000000 00000000
[    0.661729] 5fa0: 00000000 c032e9f8 00000000 c000f0f0 00000000 00000000 00000000 00000000
[    0.670020] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.678311] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    0.686673] (pxa2xx_configure_sockets) from pcmcia_lubbock_init (/drivers/pcmcia/sa1111_lubbock.c:161)
[    0.696026] (pcmcia_lubbock_init) from pcmcia_probe (/drivers/pcmcia/sa1111_generic.c:213)
[    0.704358] (pcmcia_probe) from driver_probe_device (/drivers/base/dd.c:378 /drivers/base/dd.c:499)
[    0.712848] (driver_probe_device) from __driver_attach (/./include/linux/device.h:983 /drivers/base/dd.c:733)
[    0.721414] (__driver_attach) from bus_for_each_dev (/drivers/base/bus.c:313)
[    0.729723] (bus_for_each_dev) from bus_add_driver (/drivers/base/bus.c:708)
[    0.738036] (bus_add_driver) from driver_register (/drivers/base/driver.c:169)
[    0.746185] (driver_register) from do_one_initcall (/init/main.c:778)
[    0.754561] (do_one_initcall) from kernel_init_freeable (/init/main.c:843 /init/main.c:851 /init/main.c:869 /init/main.c:1016)
[    0.763409] (kernel_init_freeable) from kernel_init (/init/main.c:944)
[    0.771660] (kernel_init) from ret_from_fork (/arch/arm/kernel/entry-common.S:119)
[ 0.779347] Code: c03c6305 c03c631e c03c632e e5903048 (e993000c)
All code
========
   0:	c03c6305 	eorsgt	r6, ip, r5, lsl #6
   4:	c03c631e 	eorsgt	r6, ip, lr, lsl r3
   8:	c03c632e 	eorsgt	r6, ip, lr, lsr #6
   c:	e5903048 	ldr	r3, [r0, #72]	; 0x48
  10:*	e993000c 	ldmib	r3, {r2, r3}		<-- trapping instruction

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2016-09-12 10:57:01 +01:00
Russell King 3f8df892b2 pcmcia: sa1111: fix propagation of lowlevel board init return code
When testing Lubbock, it was noticed that the sa1111 pcmcia driver bound
but was not functional due to no sockets being registered.  This is
because the return code from the lowlevel board initialisation was not
being propagated out of the probe function.  Fix this.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2016-09-12 10:57:01 +01:00
Russell King ff80aa57cc PCMCIA: sa1111: rename sa1111 socket drivers to have sa1111_ prefix.
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-21 14:27:18 +00:00