kernel/linux.git/include/linux/mtd/cfi.h, branch v4.14.304

mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N

2022-06-14T14:54:02+00:00

commit 0a8e98305f63deaf0a799d5cf5532cc83af035d1 upstream. Since commit dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to check correct value") buffered writes fail on S29GL064N. This is because, on S29GL064N, reads return 0xFF at the end of DQ polling for write completion, where as, chip_good() check expects actual data written to the last location to be returned post DQ polling completion. Fix is to revert to using chip_good() for S29GL064N which only checks for DQ lines to settle down to determine write completion. Link: https://lore.kernel.org/r/b687c259-6413-26c9-d4c9-b3afa69ea124@pengutronix.de/ Fixes: dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to check correct value") Cc: stable@vger.kernel.org Signed-off-by: Tokunori Ikegami Acked-by: Vignesh Raghavendra Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20220323170458.5608-3-ikegami.t@gmail.com Signed-off-by: Greg Kroah-Hartman

mtd: cfi: deinline large functions

2015-05-27T19:42:16+00:00

With this .config: http://busybox.net/~vda/kernel_config, after uninlining these functions have sizes and callsite counts as follows: cfi_udelay(): 74 bytes, 26 callsites cfi_send_gen_cmd(): 153 bytes, 95 callsites cfi_build_cmd(): 274 bytes, 123 callsites cfi_build_cmd_addr(): 49 bytes, 15 callsites cfi_merge_status(): 230 bytes, 3 callsites Reduction in code size is about 50,000: text data bss dec hex filename 85842882 22294584 20627456 128764922 7accbfa vmlinux.before 85789648 22294616 20627456 128711720 7abfc28 vmlinux Signed-off-by: Denys Vlasenko CC: Dan Carpenter CC: Jingoo Han CC: Brian Norris CC: Aaron Sierra CC: Artem Bityutskiy CC: David Woodhouse CC: linux-mtd@lists.infradead.org CC: linux-kernel@vger.kernel.org Signed-off-by: Brian Norris

mtd: use __packed shorthand

2014-08-19T18:53:08+00:00

Signed-off-by: Brian Norris

BUG: headers with BUG/BUG_ON etc. need linux/bug.h

2012-03-04T22:54:34+00:00

If a header file is making use of BUG, BUG_ON, BUILD_BUG_ON, or any other BUG variant in a static inline (i.e. not in a #define) then that header really should be including and not just expecting it to be implicitly present. We can make this change risk-free, since if the files using these headers didn't have exposure to linux/bug.h already, they would have been causing compile failures/warnings. Signed-off-by: Paul Gortmaker

mtd: cfi: Allow per-mapping CFI device endianness

2012-01-09T18:06:13+00:00

This patch allows each CFI device map to use its own endianness. The globally defined CFI endianness (CONFIG_MTD_CFI_NOSWAP, CONFIG_MTD_CFI_BE_BYTE_SWAP or CONFIG_MTD_CFI_LE_BYTE_SWAP) becomes the default value which can be overridden by a driver for a particular device. Signed-off-by: Aaron Sierra Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

mtd: cfi: add support for AMIC flashes (e.g. A29L160AT)

2011-03-11T14:27:01+00:00

Signed-off-by: Steffen Sledz Signed-off-by: David Woodhouse

mtd: cfi_fixup: remove unused 'param' parameter

2010-12-03T16:31:00+00:00

The 'param' parameter has never been used since its introduction, so simply remove it. Signed-off-by: Guillaume LECERF Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: cfi_cmdset_0002: make sector erase command variable

2010-10-26T10:39:17+00:00

Some old SST chips use 0x50 as sector erase command, instead of 0x30. Make this value variable to handle such chips. Signed-off-by: Guillaume LECERF Acked-by: Wolfram Sang Signed-off-by: David Woodhouse

mtd: Update copyright notices

2010-08-08T19:58:20+00:00

Signed-off-by: David Woodhouse