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GET /api/1.2/patches/2234842/?format=api
{ "id": 2234842, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2234842/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260508061729.9530-5-mscardovi95@gmail.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/1.2/projects/42/?format=api", "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": "<20260508061729.9530-5-mscardovi95@gmail.com>", "list_archive_url": null, "date": "2026-05-08T06:17:27", "name": "[v4,4/6] gpio: acpi: use guard(mutex) for conn_lock", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a4876249e61e6f76809bf443f7daa138009efa10", "submitter": { "id": 93312, "url": "http://patchwork.ozlabs.org/api/1.2/people/93312/?format=api", "name": "Marco Scardovi", "email": "mscardovi95@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260508061729.9530-5-mscardovi95@gmail.com/mbox/", "series": [ { "id": 503330, "url": "http://patchwork.ozlabs.org/api/1.2/series/503330/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=503330", "date": "2026-05-08T06:17:27", "name": "gpio: acpi: modernize resource management using cleanup.h", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/503330/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2234842/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2234842/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-gpio+bounces-36432-incoming=patchwork.ozlabs.org@vger.kernel.org>", "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=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=bZLlb5Xm;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; 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This\nensures the conn_lock is automatically released when exiting the\nscope, preventing potential deadlocks and simplifying the logic.\n\nSigned-off-by: Marco Scardovi <mscardovi95@gmail.com>\n---\n drivers/gpio/gpiolib-acpi-core.c | 10 +++-------\n 1 file changed, 3 insertions(+), 7 deletions(-)", "diff": "diff --git a/drivers/gpio/gpiolib-acpi-core.c b/drivers/gpio/gpiolib-acpi-core.c\nindex e53d68578024..33d6c3b6cdf0 100644\n--- a/drivers/gpio/gpiolib-acpi-core.c\n+++ b/drivers/gpio/gpiolib-acpi-core.c\n@@ -1123,7 +1123,7 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,\n \t\tu16 word, shift;\n \t\tbool found;\n \n-\t\tmutex_lock(&achip->conn_lock);\n+\t\tguard(mutex)(&achip->conn_lock);\n \n \t\tfound = false;\n \t\tlist_for_each_entry(conn, &achip->conns, node) {\n@@ -1155,17 +1155,15 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,\n \t\tif (!found) {\n \t\t\tdesc = acpi_request_own_gpiod(chip, agpio, i, \"ACPI:OpRegion\");\n \t\t\tif (IS_ERR(desc)) {\n-\t\t\t\tmutex_unlock(&achip->conn_lock);\n \t\t\t\tstatus = AE_ERROR;\n-\t\t\t\tgoto out;\n+\t\t\t\tbreak;\n \t\t\t}\n \n \t\t\tconn = kzalloc_obj(*conn);\n \t\t\tif (!conn) {\n \t\t\t\tgpiochip_free_own_desc(desc);\n-\t\t\t\tmutex_unlock(&achip->conn_lock);\n \t\t\t\tstatus = AE_NO_MEMORY;\n-\t\t\t\tgoto out;\n+\t\t\t\tbreak;\n \t\t\t}\n \n \t\t\tconn->pin = pin;\n@@ -1173,8 +1171,6 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,\n \t\t\tlist_add_tail(&conn->node, &achip->conns);\n \t\t}\n \n-\t\tmutex_unlock(&achip->conn_lock);\n-\n \t\t/*\n \t\t * For the cases when OperationRegion() consists of more than\n \t\t * 64 bits calculate the word and bit shift to use that one to\n", "prefixes": [ "v4", "4/6" ] }