linux-toradex.git/drivers/mtd, branch v2.6.31.10

mtd: cfi_cmdset_0002: add 0xFF intolerance for M29W128G

2009-10-05T16:31:52+00:00

commit 23af51ecfb04ff65bae51bd8e2270f4449abc789 upstream.

The M29W128G Numonyx flash devices are intolerant to any 0xFF command:
in the Cfi_util.c the function cfi_qry_mode_off() (that resets the device
after the autoselect mode) must have a 0xF0 command after the 0xFF command.
This fix solves also the cause of the fixup_M29W128G_write_buffer() fix,
that can be removed now.
The following patch applies to 2.6.30 kernel.

Signed-off-by: Massimo Cirillo 
Acked-by: Alexey Korolev 
Signed-off-by: David Woodhouse 
Signed-off-by: Greg Kroah-Hartman

mtd: ofpart: Check availability of reg property instead of name property

2009-10-05T16:31:51+00:00

commit ebd5a74db74ee2db833d43ea35108a4be9cab42f upstream.

The previous implementation breaks the dts binding "mtd-physmap.txt". This
implementation fixes the issue by checking the availability of the reg
property instead of the name property.

Signed-off-by: Benjamin Krill 
Signed-off-by: David Woodhouse 
Signed-off-by: Greg Kroah-Hartman

mtd: nand: fix ECC Correction bug for SMC ordering for NDFC driver

2009-10-05T16:31:51+00:00

commit 76c23c32e3b3ad48e07e07897075ab19ae1ef117 upstream.

Fix ECC Correction bug where the byte offset location were double
fliped causing correction routine to toggle the wrong byte location
in the ECC segment. The ndfc_calculate_ecc routine change the order
of getting the ECC code.
        /* The NDFC uses Smart Media (SMC) bytes order */
        ecc_code[0] = p[2];
        ecc_code[1] = p[1];
        ecc_code[2] = p[3];
But in the Correction algorithm when calculating the byte offset
location, the b1 is used as the upper part of the address. Which
again reverse the order making the final byte offset address
location incorrect.
	byte_addr = (addressbits[b1] << 4) + addressbits[b0];
The order is change to read it in straight and let the correction
function to revert it to SMC order.

Signed-off-by: Feng Kan 
Acked-by: Victor Gallardo 
Acked-by: Prodyut Hazarika 
Acked-by: Stefan Roese 
Signed-off-by: David Woodhouse 
Signed-off-by: Greg Kroah-Hartman

mtd: nftl: fix offset alignments

2009-09-03T13:59:16+00:00

Arithmetic conversion in the mask computation makes the upper word
of the second argument passed down to mtd->read_oob(), be always 0
(assuming 'offs' being a 64-bit signed long long type, and
'mtd->writesize' being a 32-bit unsigned int type).

This patch applies over the other one adding masking in nftl_write,
"nftl: write support is broken".

Signed-off-by: Dimitri Gorokhovik 
Cc: Tim Gardner 
Cc: Scott James Remnant 
Signed-off-by: David Woodhouse

mtd: nftl: write support is broken

2009-09-03T13:59:13+00:00

Write support is broken in NFTL. Fix it.

Signed-off-by: 
Cc: Tim Gardner 
Cc: Scott James Remnant 
Signed-off-by: Andrew Morton 
Signed-off-by: David Woodhouse

mtd: m25p80: fix null pointer dereference bug

2009-09-03T12:58:02+00:00

This patch fixes the following oops, observed with MTD_PARTITIONS=n:

m25p80 spi32766.0: m25p80 (1024 Kbytes)
Unable to handle kernel paging request for data at address 0x00000008
Faulting instruction address: 0xc03a54b0
Oops: Kernel access of bad area, sig: 11 [#1]
Modules linked in:
NIP: c03a54b0 LR: c03a5494 CTR: c01e98b8
REGS: ef82bb60 TRAP: 0300   Not tainted  (2.6.31-rc4-00167-g4733fd3)
MSR: 00029000   CR: 24022022  XER: 20000000
DEAR: 00000008, ESR: 00000000
TASK = ef82c000[1] 'swapper' THREAD: ef82a000
GPR00: 00000000 ef82bc10 ef82c000 0000002e 00001eb8 ffffffff c01e9824 00000036
GPR08: c054ed40 c0542a08 00001eb8 00004000 22022022 1001a1a0 3ff8fd00 00000000
GPR16: 00000000 00000001 00000000 00000000 ef82bddc c0530000 efbef500 ef8356d0
GPR24: 00000000 ef8356d0 00000000 efbf7a00 c0530ec4 ffffffed efbf5300 c0541f98
NIP [c03a54b0] m25p_probe+0x22c/0x354
LR [c03a5494] m25p_probe+0x210/0x354
Call Trace:
[ef82bc10] [c03a5494] m25p_probe+0x210/0x354 (unreliable)
[ef82bca0] [c024e37c] spi_drv_probe+0x2c/0x3c
[ef82bcb0] [c01f1afc] driver_probe_device+0xa4/0x178
[ef82bcd0] [c01f06e8] bus_for_each_drv+0x6c/0xa8
[ef82bd00] [c01f1a34] device_attach+0x84/0xa8
...

Signed-off-by: Anton Vorontsov 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Artem Bityutskiy 
Signed-off-by: David Woodhouse

[ARM] Orion NAND: Make asm volatile avoid GCC pushing ldrd out of the loop

2009-08-24T15:56:00+00:00

GCC 4.3.3 and 4.4.1 happily moves the dword load instruction out of the
loop in orion_nand_read_buf. This patch makes the instruction volatile
to avoid the issue. I've discussed this at gcc-help, refer to the thread
at

  http://gcc.gnu.org/ml/gcc-help/2009-08/msg00187.html

The early clobber is added to avoid the destination registers and the
source register overlapping.

Signed-off-by: Simon Kagstrom 
Signed-off-by: Nicolas Pitre

Remove zero-length file drivers/mtd/maps/sbc8240.c

2009-08-12T10:29:57+00:00

It was "deleted" in commit 2bf961b7ccd69e108ac435c67e2b0522b403c578

Signed-off-by: Jeff Garzik

Merge branch 'for-linus' of git://git.infradead.org/ubi-2.6

2009-08-09T21:58:34+00:00

* 'for-linus' of git://git.infradead.org/ubi-2.6:
  UBI: compatible fallback in absense of sequence numbers
  UBI: fix double free on error path

mtd: mtdblock: introduce mtdblks_lock

2009-08-03T13:25:00+00:00

The mtdblks array and its content are prone to race conditions. Introduce
the mutex mtdblks_lock in order to solve this.

[Amended by Artem Bityutskiy]

Signed-off-by: Matthias Kaehlcke 
Signed-off-by: Artem Bityutskiy 
Signed-off-by: David Woodhouse