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2022-02-04greybus: svc: clean up link configuration hack at helloJohan Hovold1-5/+8
Commit ee2f2074fdb2 ("greybus: svc: reconfig APBridgeA-Switch link to handle required load") added a temporary hack which reconfigures the link at HELLO by abusing the deferred request processing mechanism. Restructure the HELLO request processing so that the link-configuration work is queued before creating the debugfs files and add a comment explaining why it's there. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20220202113347.1288-4-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-04greybus: svc: clean up hello error pathJohan Hovold1-2/+3
While currently safe, it is unnecessary (and confusing) to try to destroy the watchdog when watchdog creation fails. Change the corresponding error path to only deregister the svc. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20220202113347.1288-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-04greybus: svc: fix an error handling bug in gb_svc_hello()Dan Carpenter1-1/+7
Cleanup if gb_svc_queue_deferred_request() fails. Link: https://lore.kernel.org/r/20220202072016.GA6748@kili Fixes: ee2f2074fdb2 ("greybus: svc: reconfig APBridgeA-Switch link to handle required load") Cc: stable@vger.kernel.org # 4.9 [johan: fix commit summary prefix and rename label ] Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20220202113347.1288-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-21greybus: es2: fix typo in a commentJason Wang1-1/+1
The double `for' in the comment in line 81 is repeated. Remove one of them from the comment. Reviewed-by: Alex Elder <elder@linaro.org> Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Link: https://lore.kernel.org/r/20211212031657.41169-1-wangborong@cdjrlc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-16greybus: es2: fix kernel-doc warningsRandy Dunlap1-3/+3
Fix these kernel-doc complaints: ../drivers/greybus/es2.c:79: warning: bad line: ../drivers/greybus/es2.c:100: warning: cannot understand function prototype: 'struct es2_ap_dev ' es2.c:126: warning: Function parameter or member 'cdsi1_in_use' not described in 'es2_ap_dev' Cc: Johan Hovold <johan@kernel.org> Cc: Alex Elder <elder@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: greybus-dev@lists.linaro.org (moderated for non-subscribers) Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20210415054338.2223-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-02greybus: remove stray nul byte in apb_log_enable_read outputRasmus Villemoes1-1/+1
Including a nul byte in the otherwise human-readable ascii output from this debugfs file is probably not intended. Acked-by: Alex Elder <elder@linaro.org> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20210326152254.733066-1-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-26greybus: es2: drop short control-transfer checksJohan Hovold1-7/+2
There's no need to check for short USB control transfers when sending data using so remove the redundant sanity checks. Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210118144629.25533-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-05greybus: remove h from printk format specifierTom Rix1-3/+3
See Documentation/core-api/printk-formats.rst. h should no longer be used in the format specifier for printk. Reviewed-by: Alex Elder <elder@linaro.org> Signed-off-by: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20201215145306.1901598-1-trix@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-04drivers/greybus: Use kobj_to_dev()Wang Qing1-3/+3
Use kobj_to_dev() instead of container_of() Signed-off-by: Wang Qing <wangqing@vivo.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/1597289690-22857-1-git-send-email-wangqing@vivo.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-29greybus: Use fallthrough pseudo-keywordGustavo A. R. Silva2-2/+2
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. [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 <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200727183258.GA28571@embeddedor Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-14treewide: replace '---help---' in Kconfig files with 'help'Masahiro Yamada1-2/+2
Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-05-13greybus: Replace zero-length array with flexible-arrayGustavo A. R. Silva1-1/+1
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] sizeof(flexible-array-member) triggers a warning because flexible array members have incomplete type[1]. There are some instances of code in which the sizeof operator is being incorrectly/erroneously applied to zero-length arrays and the result is zero. Such instances may be hiding some bugs. So, this work (flexible-array member conversions) will also help to get completely rid of those sorts of issues. 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 <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200507185318.GA14393@embeddedor Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-29greybus: fix typos in GREYBUS/GREYBUS_ES2 help textZenyu Sy1-3/+3
Fix typos ("an" -> "a", "chose" -> "choose") in Kconfig Signed-off-by: Zenyu Sy <zenyu@tuta.io> Link: https://lore.kernel.org/r/20200426060048.14019-1-zenyu@tuta.io Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-10greybus: remove excessive check in gb_connection_hd_cport_quiesce()Denis Efremov1-3/+0
Function pointer "hd->driver->cport_quiesce" is already checked at the beginning of gb_connection_hd_cport_quiesce(). Thus, the second check can be removed. Signed-off-by: Denis Efremov <efremov@linux.com> Acked-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20190925213656.8950-1-efremov@linux.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-27staging: greybus: move es2 to drivers/greybus/Greg Kroah-Hartman4-0/+1551
The es2 Greybus host controller has long been stable, so move it out of drivers/staging/ to drivers/greybus/ Cc: Johan Hovold <johan@kernel.org> Cc: greybus-dev@lists.linaro.org Cc: linux-kernel@vger.kernel.org Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Alex Elder <elder@kernel.org> Link: https://lore.kernel.org/r/20190825055429.18547-10-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-27staging: greybus: move the greybus core to drivers/greybusGreg Kroah-Hartman15-0/+7839
The Greybus core code has been stable for a long time, and has been shipping for many years in millions of phones. With the advent of a recent Google Summer of Code project, and a number of new devices in the works from various companies, it is time to get the core greybus code out of staging as it really is going to be with us for a while. Cc: Johan Hovold <johan@kernel.org> Cc: linux-kernel@vger.kernel.org Cc: greybus-dev@lists.linaro.org Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Alex Elder <elder@kernel.org> Link: https://lore.kernel.org/r/20190825055429.18547-9-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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