kernel/linux.git/drivers/base/regmap, branch v5.2.16

regmap: fix bulk writes on paged registers

2019-07-26T07:10:25+00:00

[ Upstream commit db057679de3e9e6a03c1bcd5aee09b0d25fd9f5b ] On buses like SlimBus and SoundWire which does not support gather_writes yet in regmap, A bulk write on paged register would be silently ignored after programming page. This is because local variable 'ret' value in regmap_raw_write_impl() gets reset to 0 once page register is written successfully and the code below checks for 'ret' value to be -ENOTSUPP before linearising the write buffer to send to bus->write(). Fix this by resetting the 'ret' value to -ENOTSUPP in cases where gather_writes() is not supported or single register write is not possible. Signed-off-by: Srinivas Kandagatla Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

regmap: debugfs: Fix memory leak in regmap_debugfs_init

2019-07-26T07:10:12+00:00

[ Upstream commit 2899872b627e99b7586fe3b6c9f861da1b4d5072 ] As detected by kmemleak running on i.MX6ULL board: nreferenced object 0xd8366600 (size 64): comm "swapper/0", pid 1, jiffies 4294937370 (age 933.220s) hex dump (first 32 bytes): 64 75 6d 6d 79 2d 69 6f 6d 75 78 63 2d 67 70 72 dummy-iomuxc-gpr 40 32 30 65 34 30 30 30 00 e3 f3 ab fe d1 1b dd @20e4000........ backtrace: [] kasprintf+0x2c/0x54 [] regmap_debugfs_init+0x7c/0x31c [<9c8d91fa>] __regmap_init+0xb5c/0xcf4 [<5b1c3d2a>] of_syscon_register+0x164/0x2c4 [<596a5d80>] syscon_node_to_regmap+0x64/0x90 [<49bd597b>] imx6ul_init_machine+0x34/0xa0 [<250a4dac>] customize_machine+0x1c/0x30 [<2d19fdaf>] do_one_initcall+0x7c/0x398 [] kernel_init_freeable+0x328/0x448 [<168c9101>] kernel_init+0x8/0x114 [<913268aa>] ret_from_fork+0x14/0x20 [] 0x0 Root cause is that map->debugfs_name is allocated using kasprintf and then the pointer is lost by assigning it other memory address. Reported-by: Stefan Wahren Signed-off-by: Daniel Baluta Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

Merge branch 'regmap-5.2' into regmap-next

2019-04-25T19:27:04+00:00

Merge branch 'regmap-5.1' into regmap-linus

2019-04-25T19:27:00+00:00

regmap: add proper SPDX identifiers on files that did not have them.

2019-04-25T19:22:15+00:00

There were a few files in the regmap code that did not have SPDX identifiers on them, so fix that up. At the same time, remove the "free form" text that specified the license of the file, as that is impossible for any tool to properly parse. Also, as Mark loves // comment markers, convert all of the headers to be the same to make things look consistent :) Signed-off-by: Greg Kroah-Hartman Signed-off-by: Mark Brown

regmap: verify if register is writeable before writing operations

2019-04-03T04:08:11+00:00

regmap provides a couple of ways to validate the register range used. a) maxim allowed register, b) writable/readable register tables, c) callback function that can be provided by the driver to validate a register. regmap framework should verify if registers are writeable before every write operation. However this doesn't seems to happen in every situation. The method `_regmap_raw_write_impl` is only using the `writeable_reg` callback to verify if register is writeable, ignoring the other two. This can lead to undefined behaviour since this allows to write to registers that could be declared un-writeable by using any other option. Change `_regmap_raw_write_impl` to use the `regmap_writeable` method to verify if registers are writable before the write operation. Signed-off-by: Nandor Han Signed-off-by: Mark Brown

regmap: regmap-irq: fix getting type default values

2019-04-01T08:11:41+00:00

Checking for value of type default value just after allocating will always be zero and the type register default values will never be read, so fix this! Without this patch setting irq type will be silently ignored. Patch "regmap: regmap-irq: Remove default irq type setting from core" did remove the default mask but it forgot to remove the check before reading the default type register. Fixes: 84267d1b18ab ("regmap: regmap-irq: Remove default irq type setting from core") Signed-off-by: Srinivas Kandagatla Signed-off-by: Mark Brown

regmap: debugfs: Jump to the next readable register

2019-03-20T17:13:31+00:00

Improve the speed of the loop jumping to the next available register Signed-off-by: Lucas Tanure Reviewed-by: Charles Keepax Tested-by: Charles Keepax Signed-off-by: Mark Brown

regmap: debugfs: Replace code by already existing function

2019-03-19T13:08:41+00:00

Signed-off-by: Lucas Tanure Signed-off-by: Mark Brown

Merge remote-tracking branch 'regmap/topic/irq' into regmap-next

2019-01-29T17:17:03+00:00