{"id":2224683,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2224683/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260417175955.375275-2-ynorov@nvidia.com/","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/1.2/projects/42/?format=json","name":"Linux GPIO development","link_name":"linux-gpio","list_id":"linux-gpio.vger.kernel.org","list_email":"linux-gpio@vger.kernel.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260417175955.375275-2-ynorov@nvidia.com>","list_archive_url":null,"date":"2026-04-17T17:59:53","name":"[v2,1/2] gpio: pca953x: drop bitmap_complement() where feasible","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"3b499d889d148c184611b17830cff50652b355ed","submitter":{"id":92516,"url":"http://patchwork.ozlabs.org/api/1.2/people/92516/?format=json","name":"Yury Norov","email":"ynorov@nvidia.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/patch/20260417175955.375275-2-ynorov@nvidia.com/mbox/","series":[{"id":500384,"url":"http://patchwork.ozlabs.org/api/1.2/series/500384/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/list/?series=500384","date":"2026-04-17T17:59:53","name":"gpio: drop bitmap_complement() where feasible","version":2,"mbox":"http://patchwork.ozlabs.org/series/500384/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224683/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224683/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256\n 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header.d=nvidia.com; arc=none"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com;\n s=selector2;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=0yO75ubrudtPr9DnNOTwe9S/UAQ8T4cAy84+gi+KCi0=;\n b=d40N19+NOGH/68x7dFfsdu8MIUkSfD2Jd6EXnI510Jw1c7dufHIVpHKEj6x7EwUw1Iwlcfz3mo4kWboyb7SuR88g/34Lckv8hGvHtjKa5pbWVSdB7bL1Z06HBLAH9se6IOf8CVwkOG1UH05pyinkX/6gmeW8rkWewFoi3VwcLa3FdcVfH5hMECUKkP/ET/YImhsVeycGf60UQmLi08dXn2MJDdZfbupY2yrLQaFj9t2ZYupyaCNaSdUI+uDpwCVMK0WAC6AbSERNpYX4y//5srtLhocCOIrsAVORVbefXoT9CRU2KXK5xu3kVtFaqOkbFQzOjNCO8XQW2qjTM6Kw5w==","From":"Yury Norov ","To":"Linus Walleij ,\n\tAndy Shevchenko ,\n\tBartosz Golaszewski ,\n\tShubhrajyoti Datta ,\n\tSrinivas Neeli ,\n\tMichal Simek ,\n\tYury Norov ,\n\tlinux-gpio@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-arm-kernel@lists.infradead.org","Cc":"Yury Norov ","Subject":"[PATCH v2 1/2] gpio: pca953x: drop bitmap_complement() where feasible","Date":"Fri, 17 Apr 2026 13:59:53 -0400","Message-ID":"<20260417175955.375275-2-ynorov@nvidia.com>","X-Mailer":"git-send-email 2.51.0","In-Reply-To":"<20260417175955.375275-1-ynorov@nvidia.com>","References":"<20260417175955.375275-1-ynorov@nvidia.com>","Content-Transfer-Encoding":"8bit","Content-Type":"text/plain","X-ClientProxiedBy":"BN0PR03CA0041.namprd03.prod.outlook.com\n (2603:10b6:408:e7::16) To CY8PR12MB8300.namprd12.prod.outlook.com\n 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c0bb62b3-0a72-4cc4-09ea-08de9cab24ef","X-MS-Exchange-CrossTenant-AuthSource":"CY8PR12MB8300.namprd12.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"17 Apr 2026 18:00:00.7313\n (UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"43083d15-7273-40c1-b7db-39efd9ccc17a","X-MS-Exchange-CrossTenant-MailboxType":"HOSTED","X-MS-Exchange-CrossTenant-UserPrincipalName":"\n DhewajTZmqkH1qOKvgBH9258lJ9LUXyDmQcpUxjqiHHWtRZu5gO/loM79r0Nydv56xyqWvPmLCPIdjhi5E7Xpg==","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"IA0PPF0A63E7557"},"content":"The driver reproduces the following pattern:\n\n\tbitmap_complement(tmp, data1, nbits);\n\tbitmap_and(dst, data2, tmp, nbits);\n\nThis can be done in a single pass:\n\n\tbitmap_andnot(dst, data2, data1, nbits);\n\nReviewed-by: Andy Shevchenko \nSigned-off-by: Yury Norov \n---\n drivers/gpio/gpio-pca953x.c | 7 ++-----\n 1 file changed, 2 insertions(+), 5 deletions(-)","diff":"diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c\nindex 52e96cc5f67b..1fef733fe1f0 100644\n--- a/drivers/gpio/gpio-pca953x.c\n+++ b/drivers/gpio/gpio-pca953x.c\n@@ -877,11 +877,9 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d)\n \tbitmap_or(irq_mask, chip->irq_trig_fall, chip->irq_trig_raise, gc->ngpio);\n \tbitmap_or(irq_mask, irq_mask, chip->irq_trig_level_high, gc->ngpio);\n \tbitmap_or(irq_mask, irq_mask, chip->irq_trig_level_low, gc->ngpio);\n-\tbitmap_complement(reg_direction, reg_direction, gc->ngpio);\n-\tbitmap_and(irq_mask, irq_mask, reg_direction, gc->ngpio);\n \n \t/* Look for any newly setup interrupt */\n-\tfor_each_set_bit(level, irq_mask, gc->ngpio)\n+\tfor_each_andnot_bit(level, irq_mask, reg_direction, gc->ngpio)\n \t\tpca953x_gpio_direction_input(&chip->gpio_chip, level);\n \n \tmutex_unlock(&chip->irq_lock);\n@@ -1005,8 +1003,7 @@ static bool pca953x_irq_pending(struct pca953x_chip *chip, unsigned long *pendin\n \tbitmap_and(cur_stat, cur_stat, chip->irq_mask, gc->ngpio);\n \tbitmap_or(pending, pending, cur_stat, gc->ngpio);\n \n-\tbitmap_complement(cur_stat, new_stat, gc->ngpio);\n-\tbitmap_and(cur_stat, cur_stat, reg_direction, gc->ngpio);\n+\tbitmap_andnot(cur_stat, reg_direction, new_stat, gc->ngpio);\n \tbitmap_and(old_stat, cur_stat, chip->irq_trig_level_low, gc->ngpio);\n \tbitmap_and(old_stat, old_stat, chip->irq_mask, gc->ngpio);\n \tbitmap_or(pending, pending, old_stat, gc->ngpio);\n","prefixes":["v2","1/2"]}