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  1. 24 Apr, 2014 15 commits
  3. 23 Apr, 2014 1 commit
    • Tony Lindgren's avatar
      ARM: OMAP2+: Fix GPMC remap for devices using an offset · fb677ef7
      Tony Lindgren authored 
      At least the smc91x driver expects the device to be at 0x300
offset from bus base address. This does not work currently
for GPMC when booted in device tree mode as it attempts to
remap the the allocated GPMC partition to the address
configured by the device tree plus the device offset.

Note that this works just fine when booted with legacy mode.

Let's fix the issue by just ignoring any device specific
offset while remapping. And let's make sure the remap
address confirms to the GPMC 16MB minimum granularity
as listed in the TRM for GPMC_CONFIG7 BASEADDRESS bits.

Otherwise we can get something like this:

omap-gpmc 6e000000.gpmc: cannot remap GPMC CS 1 to 0x01000300

Cc: Pekon Gupta <pekon@ti.com>
Reviewed-by: default avatarJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      fb677ef7
  5. 22 Apr, 2014 1 commit
    • Tony Lindgren's avatar
      ARM: OMAP2+: Fix oops for GPMC free · efe80723
      Tony Lindgren authored 
      If gpmc_cs_remap() fails we will get an error because we are calling
release_resource() on an uninitialized resource. Let's fix that by
checking the resource flags. And while at it, let's also make
gpmc_cs_delete_mem() use the res pointer that we already have to
avoid confusion.

Without this patch we can get the following error:

omap-gpmc 6e000000.gpmc: cannot remap GPMC CS 1 to 0x01000300
Unable to handle kernel NULL pointer dereference at virtual address 00000018
...
(gpmc_cs_free+0x94/0xc8)
(gpmc_probe_generic_child+0x178/0x1ec)
(gpmc_probe_dt+0x1bc/0x2cc)
(gpmc_probe+0x250/0x44c)
(platform_drv_probe+0x3c/0x6c)
(really_probe+0x74/0x208)
(driver_probe_device+0x34/0x50)
(bus_for_each_drv+0x60/0x8c)
(device_attach+0x80/0xa4)
(bus_probe_device+0x88/0xb0)
(device_add+0x320/0x450)
(of_platform_device_create_pdata+0x80/0x9c)
(of_platform_bus_create+0xd0/0x170)
(of_platform_bus_create+0x12c/0x170)
(of_platform_populate+0x60/0x98)
(pdata_quirks_init+0x30/0x48)
(customize_machine+0x20/0x48)
(do_one_initcall+0x2c/0x14c)
(do_basic_setup+0x98/0xd8)
(kernel_init_freeable+0x12c/0x1e0)
(kernel_init+0x8/0xf0)
(ret_from_fork+0x14/0x2c)
Code: e1a04000 e59f0070 eb195136 e5942010 (e5923018)

Cc: Pekon Gupta <pekon@ti.com>
Reviewed-by: default avatarJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: default avatartony Lindgren <tony@atomide.com>
      efe80723
  7. 18 Apr, 2014 12 commits
  9. 15 Apr, 2014 4 commits
  11. 14 Apr, 2014 7 commits
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