linux_dsm_epyc7002/drivers/mtd/nand
Thomas Petazzoni b7e460624f mtd: pxa3xx_nand: make the driver work on big-endian systems
The pxa3xx_nand driver currently uses __raw_writel() and __raw_readl()
to access I/O registers. However, those functions do not do any
endianness swapping, which means that they won't work when the CPU
runs in big-endian but the I/O registers are little endian, which is
the common situation for ARM systems running big endian.

Since __raw_writel() and __raw_readl() do not include any memory
barriers and the pxa3xx_nand driver can only be compiled for ARM
platforms, the closest I/o accessors functions that do endianess
swapping are writel_relaxed() and readl_relaxed().

This patch has been verified to work on Armada XP GP: without the
patch, the NAND is not detected when the kernel runs big endian while
it is properly detected when the kernel runs little endian. With the
patch applied, the NAND is properly detected in both situations
(little and big endian).

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: <stable@vger.kernel.org> # v3.13+
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-05-28 13:27:37 -07:00
..
bcm47xxnflash mtd: bcm47xxnflash: Use devm_kzalloc 2013-11-06 23:32:56 -08:00
gpmi-nand mtd: gpmi: add gpmi_devdata{} to simplify the code 2014-04-16 00:46:55 -07:00
ams-delta.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
atmel_nand_ecc.h mtd: at91: atmel_nand: add Programmable Multibit ECC controller support 2012-07-06 18:23:25 +01:00
atmel_nand_nfc.h mtd: atmel_nand: add Nand Flash Controller (NFC) support 2013-08-05 21:07:41 +01:00
atmel_nand.c mtd: atmel_nand: Disable subpage NAND write when using Atmel PMECC 2014-03-10 22:42:31 -07:00
au1550nd.c mtd: nand: force NAND_CMD_READID onto 8-bit bus 2014-03-10 22:42:22 -07:00
bf5xx_nand.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
cafe_nand.c mtd: nand: kill the the NAND_MAX_PAGESIZE/NAND_MAX_OOBSIZE for nand_buffers{} 2014-03-10 22:42:22 -07:00
cmx270_nand.c mtd: cmx270_nand: Remove unnecessary OOM messages 2014-01-03 11:22:29 -08:00
cs553x_nand.c mtd: cs553x_nand: Remove unnecessary OOM messages 2014-01-03 11:22:29 -08:00
davinci_nand.c mtd: davinci-nand: disable subpage write for keystone-nand 2014-04-15 23:56:24 -07:00
denali_dt.c mtd: denali_dt: Use devm_ioremap_resource() 2014-03-25 23:21:08 -07:00
denali_pci.c mtd: denali: Drop print of build date/time 2014-01-09 08:52:48 -08:00
denali.c mtd: nand: refactor erase_cmd() to return chip status 2014-05-09 13:19:42 -07:00
denali.h mtd: denali: kill the NAND_MAX_PAGESIZE/NAND_MAX_OOBSIZE 2014-01-11 12:20:15 -08:00
diskonchip.c mtd: diskonchip: mem resource name is not optional 2014-03-31 18:43:22 -07:00
docg4.c mtd: nand: refactor erase_cmd() to return chip status 2014-05-09 13:19:42 -07:00
fsl_elbc_nand.c mtd: eLBC NAND: fix subpage write support 2014-05-20 16:35:31 -07:00
fsl_ifc_nand.c mtd: fsl_ifc_nand: Workaround bogus WP on 16-bit NAND 2014-05-20 17:36:34 -07:00
fsl_upm.c drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
fsmc_nand.c mtd: fsmc_nand: use dev_warn() instead of printk() 2014-01-07 10:07:03 -08:00
gpio.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
jz4740_nand.c mtd: jz4740_nand: Remove unnecessary OOM messages 2014-01-03 11:22:30 -08:00
Kconfig MTD updates for 3.15: 2014-04-07 10:17:30 -07:00
lpc32xx_mlc.c mtd: lpc32xx_mlc: Remove unnecessary OOM messages 2014-01-07 10:06:58 -08:00
lpc32xx_slc.c mtd: lpc32xx_slc: Remove unnecessary OOM messages 2014-01-07 10:07:00 -08:00
Makefile mtd: remove alauda driver 2013-08-30 21:51:57 +01:00
mpc5121_nfc.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
mxc_nand.c mtd: mxc_nand: Propagate the error if platform_get_irq() fails 2014-03-10 22:42:26 -07:00
nand_base.c mtd: nand: Warn the user if the selected ECC strength is too weak 2014-05-21 12:55:08 -07:00
nand_bbt.c mtd: nand_bbt: handle error case for nand_create_badblock_pattern() 2014-05-28 00:05:25 -07:00
nand_bch.c mtd: cleanup style on pr_debug messages 2011-09-11 15:02:16 +03:00
nand_ecc.c mtd: nand: add line feed to pr_err 2014-04-16 00:18:26 -07:00
nand_ids.c mtd: nand: add support for SanDisk SDTNRGAMA-008G 2014-03-10 22:42:22 -07:00
nandsim.c MTD merge for 3.13 2013-11-14 12:31:43 +09:00
ndfc.c drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
nuc900_nand.c mtd: nuc900_nand: NULL dereference in nuc900_nand_enable() 2014-03-10 22:42:27 -07:00
omap2.c mtd: nand: omap: fix omap_calculate_ecc_bch() for-loop error 2014-05-28 13:13:00 -07:00
orion_nand.c mtd: orion_nand: Make of_device_id array const 2014-05-20 16:35:30 -07:00
pasemi_nand.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
plat_nand.c mtd: plat_nand: remove redundant return value check of platform_get_resource() 2014-01-20 11:37:29 -08:00
pxa3xx_nand.c mtd: pxa3xx_nand: make the driver work on big-endian systems 2014-05-28 13:27:37 -07:00
r852.c mtd: nand: r852: correct write_buf loop bounds 2014-05-28 00:05:26 -07:00
r852.h mtd: r852: remove useless pci powerup/down from suspend/resume routines 2010-10-25 01:32:21 +01:00
s3c2410.c mtd: delete non-required instances of include <linux/init.h> 2014-03-10 22:42:22 -07:00
sh_flctl.c PM / QoS: Rename device resume latency QoS items 2014-02-11 00:35:23 +01:00
sharpsl.c mtd: sharpsl: use dev_err() instead of printk() 2014-01-07 10:07:31 -08:00
sm_common.c mtd: nand: refactor chip->block_markbad interface 2013-08-30 16:47:52 +01:00
sm_common.h mtd: sm_common: split smartmedia and xD table 2010-05-14 01:03:46 +01:00
socrates_nand.c MTD merge for 3.13 2013-11-14 12:31:43 +09:00
tmio_nand.c mtd: tmio_nand: Use devm_*() functions 2014-01-03 11:22:28 -08:00
txx9ndfmc.c mtd: txx9ndfmc: Remove unnecessary OOM messages 2014-01-03 11:22:30 -08:00
xway_nand.c mtd: lantiq: Add NAND support on Lantiq XWAY SoC. 2012-09-29 15:05:18 +01:00