kernel/linux.git/drivers/w1, branch v5.4.113

w1: mxc_w1: Fix timeout resolution problem leading to bus error

2020-11-05T10:43:25+00:00

commit c9723750a699c3bd465493ac2be8992b72ccb105 upstream. On my platform (i.MX53) bus access sometimes fails with w1_search: max_slave_count 64 reached, will continue next search. The reason is the use of jiffies to implement a 200us timeout in mxc_w1_ds2_touch_bit(). On some platforms the jiffies timer resolution is insufficient for this. Fix by replacing jiffies by ktime_get(). For consistency apply the same change to the other use of jiffies in mxc_w1_ds2_reset_bus(). Fixes: f80b2581a706 ("w1: mxc_w1: Optimize mxc_w1_ds2_touch_bit()") Cc: stable Signed-off-by: Martin Fuzzey Link: https://lore.kernel.org/r/1601455030-6607-1-git-send-email-martin.fuzzey@flowbird.group Signed-off-by: Greg Kroah-Hartman

w1: omap-hdq: cleanup to add missing newline for some dev_dbg

2020-06-22T07:31:26+00:00

commit 5e02f3b31704e24537697bce54f8156bdb72b7a6 upstream. Otherwise it will corrupt the console log during debugging. Fixes: 7b5362a603a1 ("w1: omap_hdq: Fix some error/debug handling.") Cc: stable@vger.kernel.org Acked-by: Tony Lindgren Signed-off-by: H. Nikolaus Schaller Link: https://lore.kernel.org/r/cd0d55749a091214106575f6e1d363c6db56622f.1590255176.git.hns@goldelico.com Signed-off-by: Greg Kroah-Hartman

w1: ds250x: Fix build error without CRC16

2019-10-10T13:35:41+00:00

If CRC16 is not set, building will fails: drivers/w1/slaves/w1_ds250x.o: In function `w1_ds2505_read_page': w1_ds250x.c:(.text+0x82f): undefined reference to `crc16' w1_ds250x.c:(.text+0x90a): undefined reference to `crc16' w1_ds250x.c:(.text+0x91a): undefined reference to `crc16' Reported-by: Hulk Robot Fixes: 25ec8710d9c2 ("w1: add DS2501, DS2502, DS2505 EPROM device driver") Signed-off-by: YueHaibing Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20190920060318.35020-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman

w1: add DS2501, DS2502, DS2505 EPROM device driver

2019-09-04T12:34:31+00:00

Add a 1-Wire slave driver to support DS250x EPROM deivces. This slave driver attaches the devices to the NVMEM subsystem for an easy in-kernel usage. Signed-off-by: Thomas Bogendoerfer Link: https://lore.kernel.org/r/20190831082623.15627-3-tbogendoerfer@suse.de Signed-off-by: Greg Kroah-Hartman

w1: add 1-wire master driver for IP block found in SGI ASICs

2019-09-04T12:34:31+00:00

Starting with SGI Origin machines nearly every new SGI ASIC contains an 1-Wire master. They are used for attaching One-Wire prom devices, which contain information about part numbers, revision numbers, serial number etc. and MAC addresses for ethernet interfaces. This patch adds a master driver to support this IP block. It also adds an extra field dev_id to struct w1_bus_master, which could be in used in slave drivers for creating unique device names. Signed-off-by: Thomas Bogendoerfer Link: https://lore.kernel.org/r/20190831082623.15627-2-tbogendoerfer@suse.de Signed-off-by: Greg Kroah-Hartman

w1: omap-hdq: use devm_platform_ioremap_resource() to simplify code

2019-08-05T15:56:46+00:00

Use devm_platform_ioremap_resource() to simplify the code a bit. This is detected by coccinelle. Reported-by: Hulk Robot Signed-off-by: YueHaibing Link: https://lore.kernel.org/r/20190802135010.24052-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: use devm_platform_ioremap_resource() to simplify code

2019-08-05T15:56:46+00:00

Use devm_platform_ioremap_resource() to simplify the code a bit. This is detected by coccinelle. Reported-by: Hulk Robot Signed-off-by: YueHaibing Link: https://lore.kernel.org/r/20190802134819.9088-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman

docs: driver-api: add a series of orphaned documents

2019-07-15T14:03:02+00:00

There are lots of documents under Documentation/*.txt and a few other orphan documents elsehwere that belong to the driver-API book. Move them to their right place. Reviewed-by: Cornelia Huck # vfio-related parts Acked-by: Logan Gunthorpe # switchtec Signed-off-by: Mauro Carvalho Chehab

docs: connector: convert to ReST and rename to connector.rst

2019-07-15T12:20:23+00:00

As it has some function definitions, move them to connector.h. The remaining conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab

Merge 5.2-rc6 into char-misc-next

2019-06-23T07:23:33+00:00

We need the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman