kernel/drivers/usb/musb/cppi_dma.c, branch linux-rolling-stable

usb: musb: remove unused davinci support

2022-10-22T11:23:17Z

The musb-davinci driver was only used on dm644x, which got removed in linux-6.0. The only remaining davinci machines are da8xx devicetree based and do not use this hardware. Signed-off-by: Arnd Bergmann Acked-by: Bartosz Golaszewski Link: https://lore.kernel.org/r/20221019152947.3857217-6-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59Z

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

treewide: Remove uninitialized_var() usage

2020-07-16T19:35:15Z

Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \ xargs perl -pi -e \ 's/\buninitialized_var$([^$]+)\)/\1/g; s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe # IB Acked-by: Kalle Valo # wireless drivers Reviewed-by: Chao Yu # erofs Signed-off-by: Kees Cook

USB: add SPDX identifiers to all remaining files in drivers/usb/

2017-11-04T10:48:02Z

It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/usb/ and include/linux/usb* files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner Cc: Kate Stewart Cc: Philippe Ombredanne Signed-off-by: Greg Kroah-Hartman Acked-by: Felipe Balbi Acked-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

usb: musb: cppi_dma.c: use DIV_ROUND_UP macro in cppi_next_(r|t)x_segment()

2017-04-18T14:48:26Z

DIV_ROUND_UP is bit useful than series of "/" and "%" operations. Replace "/%" sequence with DIV_ROUND_UP macro. Signed-off-by: Ivan Safonov Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman

usb: musb: cppi_dma: Clean up cppi structure

2017-02-09T12:35:05Z

A pointer to musb is now present in the dma_controller structure. Remove the one present in cppi structure. Signed-off-by: Alexandre Bailon Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman

usb: musb: cleanup cppi_dma header

2016-07-16T23:23:57Z

davinci.h is not required by cppi_dma.h but cppi_dma.c, so move the include to the right place. Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman

usb: musb: switch dev_dbg to tracepoints

2016-07-16T23:23:57Z

Switch dev_dbg() to tracepoint debug musb_dbg(). Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman

usb: musb: Set up function pointers for DMA

2015-05-07T18:35:51Z

Set up function pointers for DMA so get closer to being able to build in all the DMA engines. Signed-off-by: Tony Lindgren Signed-off-by: Felipe Balbi

usb: musb: dma: merge ->start/stop into create/destroy

2013-07-29T10:53:18Z

The core code creates a controller and immediately after that it calls the ->start() callback. This one might drop an error but nobody cares. The same thing happens in the destroy corner: First ->stop() called followed by destroy callback. So why not merge those two into the same function since there is no difference. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi