kernel/linux.git/drivers/misc/eeprom, branch v5.4.232

eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX

2022-02-16T11:52:52+00:00

commit c0689e46be23160d925dca95dfc411f1a0462708 upstream. Commit effa453168a7 ("i2c: i801: Don't silently correct invalid transfer size") revealed that ee1004_eeprom_read() did not properly limit how many bytes to read at once. In particular, i2c_smbus_read_i2c_block_data_or_emulated() takes the length to read as an u8. If count == 256 after taking into account the offset and page boundary, the cast to u8 overflows. And this is common when user space tries to read the entire EEPROM at once. To fix it, limit each read to I2C_SMBUS_BLOCK_MAX (32) bytes, already the maximum length i2c_smbus_read_i2c_block_data_or_emulated() allows. Fixes: effa453168a7 ("i2c: i801: Don't silently correct invalid transfer size") Cc: stable@vger.kernel.org Reviewed-by: Heiner Kallweit Signed-off-by: Jonas Malaco Link: https://lore.kernel.org/r/20220203165024.47767-1-jonas@protocubo.io Signed-off-by: Greg Kroah-Hartman

eeprom: idt_89hpesx: Restore printing the unsupported fwnode name

2021-07-14T14:53:43+00:00

[ Upstream commit e0db3deea73ba418bf5dc21f5a4e32ca87d16dde ] When iterating over child firmware nodes restore printing the name of ones that are not supported. While at it, refactor loop body to clearly show that we stop at the first match. Fixes: db15d73e5f0e ("eeprom: idt_89hpesx: Support both ACPI and OF probing") Cc: Huy Duong Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210607221757.81465-2-andy.shevchenko@gmail.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

eeprom: idt_89hpesx: Put fwnode in matching case during ->probe()

2021-07-14T14:53:43+00:00

[ Upstream commit 3f6ee1c095156a74ab2df605af13020f1ce3e600 ] device_get_next_child_node() bumps a reference counting of a returned variable. We have to balance it whenever we return to the caller. Fixes: db15d73e5f0e ("eeprom: idt_89hpesx: Support both ACPI and OF probing") Cc: Huy Duong Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210607221757.81465-1-andy.shevchenko@gmail.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eeprom

2021-03-11T13:06:50+00:00

[ Upstream commit f6f1f8e6e3eea25f539105d48166e91f0ab46dd1 ] A dummy zero bit is sent preceding the data during a read transfer by the Microchip 93LC46B eeprom (section 2.7 of[1]). This results in right shift of data during a read. In order to ignore this bit a quirk can be added to send an extra zero bit after the read address. Add a quirk to ignore the zero bit sent before data by adding a zero bit after the read address. [1] - https://www.mouser.com/datasheet/2/268/20001749K-277859.pdf Signed-off-by: Aswath Govindraju Link: https://lore.kernel.org/r/20210105105817.17644-3-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

misc: eeprom_93xx46: Add module alias to avoid breaking support for non device tree users

2021-03-04T09:26:36+00:00

[ Upstream commit 4540b9fbd8ebb21bb3735796d300a1589ee5fbf2 ] Module alias "spi:93xx46" is used by non device tree users like drivers/misc/eeprom/digsy_mtc_eeprom.c and removing it will break support for them. Fix this by adding back the module alias "spi:93xx46". Fixes: 13613a2246bf ("misc: eeprom_93xx46: Fix module alias to enable module autoprobe") Signed-off-by: Aswath Govindraju Link: https://lore.kernel.org/r/20210113051253.15061-1-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

misc: eeprom_93xx46: Fix module alias to enable module autoprobe

2021-03-04T09:26:35+00:00

[ Upstream commit 13613a2246bf531f5fc04e8e62e8f21a3d39bf1c ] Fix module autoprobe by correcting module alias to match the string from /sys/class/.../spi1.0/modalias content. Fixes: 06b4501e88ad ("misc/eeprom: add driver for microwire 93xx46 EEPROMs") Signed-off-by: Aswath Govindraju Link: https://lore.kernel.org/r/20210107163957.28664-2-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

eeprom: at25: set minimum read/write access stride to 1

2020-10-29T08:58:10+00:00

commit 284f52ac1c6cfa1b2e5c11b84653dd90e4e91de7 upstream. SPI eeproms are addressed by byte. Signed-off-by: Christian Eggers Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200728092959.24600-1-ceggers@arri.de Signed-off-by: Greg Kroah-Hartman

Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

2019-09-24T23:48:02+00:00

Pull i2c updates from Wolfram Sang: - new driver for ICY, an Amiga Zorro card :) - axxia driver gained slave mode support, NXP driver gained ACPI - the slave EEPROM backend gained 16 bit address support - and lots of regular driver updates and reworks * 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (52 commits) i2c: tegra: Move suspend handling to NOIRQ phase i2c: imx: ACPI support for NXP i2c controller i2c: uniphier(-f): remove all dev_dbg() i2c: uniphier(-f): use devm_platform_ioremap_resource() i2c: slave-eeprom: Add comment about address handling i2c: exynos5: Remove IRQF_ONESHOT i2c: stm32f7: Make structure stm32f7_i2c_algo constant i2c: cht-wc: drop check because i2c_unregister_device() is NULL safe i2c-eeprom_slave: Add support for more eeprom models i2c: fsi: Add of_put_node() before break i2c: synquacer: Make synquacer_i2c_ops constant i2c: hix5hd2: Remove IRQF_ONESHOT i2c: i801: Use iTCO version 6 in Cannon Lake PCH and beyond watchdog: iTCO: Add support for Cannon Lake PCH iTCO i2c: iproc: Make bcm_iproc_i2c_quirks constant i2c: iproc: Add full name of devicetree node to adapter name i2c: piix4: Add ACPI support i2c: piix4: Fix probing of reserved ports on AMD Family 16h Model 30h i2c: ocores: use request_any_context_irq() to register IRQ handler i2c: designware: Fix optional reset error handling ...

eeprom: Deprecate the legacy eeprom driver

2019-09-04T07:57:35+00:00

Time has come to get rid of the old eeprom driver. The at24 driver should be used instead. So mark the eeprom driver as deprecated and give users some time to migrate. Then we can remove the legacy eeprom driver completely. Signed-off-by: Jean Delvare Cc: Arnd Bergmann Link: https://lore.kernel.org/r/20190902104838.058725c2@endymion Signed-off-by: Greg Kroah-Hartman

Merge tag 'at24-v5.4-updates-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-5.4

2019-09-03T17:30:06+00:00

at24: updates for v5.4 - don't include an unneeded header