linux/drivers/i3c, branch v5.7

i3c: convert to use i2c_new_client_device()

2020-03-29T08:35:50Z

Move away from the deprecated API. Signed-off-by: Wolfram Sang Signed-off-by: Boris Brezillon Link: https://lore.kernel.org/linux-i3c/20200326211002.13241-2-wsa+renesas@sang-engineering.com

i3c: master: Replace zero-length array with flexible-array member

2020-02-28T08:36:01Z

The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva Signed-off-by: Boris Brezillon Link: https://lore.kernel.org/linux-i3c/20200227131307.GA24935@embeddedor

i3c: Simplify i3c_device_match_id()

2020-02-28T08:36:01Z

Simply match against ->match_flags instead of trying to be smart and fix drivers inconsistent ID tables. Signed-off-by: Boris Brezillon Signed-off-by: Vitor Soares Link: https://lore.kernel.org/linux-i3c/8c5d6523e1c161783db834a3447954f7fd6267e6.1582796652.git.vitor.soares@synopsys.com

i3c: Add a modalias sysfs attribute

2020-02-28T08:35:52Z

Create a modalias sysfs attribute for i3c devices. Signed-off-by: Boris Brezillon Signed-off-by: Vitor Soares Link: https://lore.kernel.org/linux-i3c/a90f64f830128cd12762153de7828b775574c156.1582796652.git.vitor.soares@synopsys.com

i3c: Fix MODALIAS uevents

2020-02-27T15:51:18Z

file2alias uses %X formatters. Fix typos in the MODALIAS uevent to print the part and ext IDs in uppercase. Signed-off-by: Boris Brezillon Signed-off-by: Vitor Soares Link: https://lore.kernel.org/linux-i3c/9ac5f1f8413fbb0481de76b5e43f2f4e1b2dc49f.1582796652.git.vitor.soares@synopsys.com

i3c: master: no need to iterate master device twice

2020-02-17T22:13:43Z

We already have the master device in a variable, reuse it. Signed-off-by: Wolfram Sang Acked-by: Vitor Soares Reviewed-by: Geert Uytterhoeven Signed-off-by: Boris Brezillon Link: https://lore.kernel.org/linux-i3c/20200214145853.24762-1-wsa+renesas@sang-engineering.com

i3c: master: dw: reattach device on first available location of address table

2020-01-13T09:00:05Z

For today the reattach function only update the device address on the controller. Update the location to the first available too, will optimize the enumeration process avoiding additional checks to keep the available positions on address table consecutive. Signed-off-by: Vitor Soares Reviewed-by: Boris Brezillon Signed-off-by: Boris Brezillon

i3c: master: cdns: convert to devm_platform_ioremap_resource

2020-01-13T08:48:46Z

Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li Signed-off-by: Boris Brezillon

i3c: master: dw: convert to devm_platform_ioremap_resource

2020-01-13T08:46:12Z

Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li Acked-by: Vitor Soares Signed-off-by: Boris Brezillon

i3c: master: make i3c_bus_set_mode static

2019-12-09T15:07:39Z

i3c_bus_set_mode function is only used in master.c. Make it static to avoid warning when compiling with W=1. Signed-off-by: Benjamin Gaignard Signed-off-by: Boris Brezillon