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path: root/drivers/hwspinlock/u8500_hsem.c
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2019-11-09hwspinlock: u8500_hsem: Remove redundant PM runtime implementationBaolin Wang1-15/+4
Since the hwspinlock core has changed the PM runtime to be optional, thus remove the redundant PM runtime implementation in the u8500 HWSEM driver. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-10-05hwspinlock: u8500_hsem: Use devm_hwspin_lock_register() to register hwlock ↵Baolin Wang1-9/+2
controller Use devm_hwspin_lock_register() to register the hwlock controller instead of unregistering the hwlock controller explicitly when removing the device. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-10-05hwspinlock: u8500_hsem: Use devm_kzalloc() to allocate memoryBaolin Wang1-9/+6
Use devm_kzalloc() to allocate memory. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-10-05hwspinlock: u8500_hsem: Change to use devm_platform_ioremap_resource()Baolin Wang1-15/+5
Use the new helper that wraps the calls to platform_get_resource() and devm_ioremap_resource() together, which can simpify the code. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-06-11Merge tag 'hwlock-v4.18' of git://github.com/andersson/remoteprocLinus Torvalds1-9/+1
Pull hwspinlock updates from Bjorn Andersson: "In addition to migrating the files to use SPDX license headers this introduces the ability for clients to operate a hwlock without the framework taking any additional locks" * tag 'hwlock-v4.18' of git://github.com/andersson/remoteproc: hwspinlock/u8500: Switch to SPDX license identifier hwspinlock: sprd: Switch to SPDX license identifier hwspinlock/sirf: Switch to SPDX license identifier hwspinlock: qcom: Switch to SPDX license identifier hwspinlock/omap: Switch to SPDX license identifier hwspinlock/core: Switch to SPDX license identifier hwspinlock: Introduce one new mode for hwspinlock hwspinlock: Convert to use 'switch' statement
2018-06-06treewide: Use struct_size() for kmalloc()-familyKees Cook1-1/+1
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = kmalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kmalloc(struct_size(instance, entry, count), GFP_KERNEL); This patch makes the changes for kmalloc()-family (and kvmalloc()-family) uses. It was done via automatic conversion with manual review for the "CHECKME" non-standard cases noted below, using the following Coccinelle script: // pkey_cache = kmalloc(sizeof *pkey_cache + tprops->pkey_tbl_len * // sizeof *pkey_cache->table, GFP_KERNEL); @@ identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc"; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP) + alloc(struct_size(VAR, ELEMENT, COUNT), GFP) // mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL); @@ identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc"; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP) + alloc(struct_size(VAR, ELEMENT, COUNT), GFP) // Same pattern, but can't trivially locate the trailing element name, // or variable name. @@ identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc"; expression GFP; expression SOMETHING, COUNT, ELEMENT; @@ - alloc(sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP) + alloc(CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-05-24hwspinlock/u8500: Switch to SPDX license identifierSuman Anna1-9/+1
Use the appropriate SPDX license identifier in the U8500 HWSEM driver source file and drop the previous boilerplate license text. Cc: Mathieu J. Poirier <mathieu.poirier@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2014-10-20hwspinlock: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2012-11-28hwspinlock: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28hwspinlock: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28hwspinlock: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2011-11-09Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: drivers/media: video/a5k6aa is a module and so needs module.h mfd: fix build failures in recently added ab5500 code hwspinlock/u8500: include linux/module.h MTD: MAPS: bcm963xx-flash.c: explicitly include module.h
2011-11-08hwspinlock/u8500: fix build error due to undefined labelAxel Lin1-4/+2
Fix below build error: CC drivers/hwspinlock/u8500_hsem.o drivers/hwspinlock/u8500_hsem.c: In function 'u8500_hsem_probe': drivers/hwspinlock/u8500_hsem.c:113: error: label 'free_state' used but not defined Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
2011-11-08hwspinlock/u8500: include linux/module.hAxel Lin1-0/+1
Include module.h to fix below build error: CC drivers/hwspinlock/u8500_hsem.o drivers/hwspinlock/u8500_hsem.c:177: error: 'THIS_MODULE' undeclared here (not in a function) [...] drivers/hwspinlock/u8500_hsem.c:196: warning: type defaults to 'int' in declaration of 'MODULE_AUTHOR' drivers/hwspinlock/u8500_hsem.c:196: warning: function declaration isn't a prototype make[2]: *** [drivers/hwspinlock/u8500_hsem.o] Error 1 make[1]: *** [drivers/hwspinlock] Error 2 make: *** [drivers] Error 2 Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-21hwspinlock/u8500: add hwspinlock driverMathieu J. Poirier1-0/+198
Add hwspinlock driver for U8500's Hsem hardware. At this point only HSem's protocol 1 is used (i.e. no interrupts). Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> [ohad@wizery.com: adopt recent hwspin_lock_{un}register API changes] [ohad@wizery.com: set the owner member of the driver] [ohad@wizery.com: mark ->remove() function as __devexit] [ohad@wizery.com: write commit log] [ohad@wizery.com: small cleanups] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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