From nobody Sun Dec 14 05:56:52 2025 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B95711E2858 for ; Thu, 30 Oct 2025 06:37:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761806232; cv=none; b=otnblE6JimIklLwBy1FfZtYb3hR/pQNQnYO5Oo8JjKCl4FkfdUyligmktxQeACNzIGQOoazCGHVW6k30jzV60BcqLzuyWNOpUgkQ+UINBCeCA8Z68LlDC0QJrs/qQR22tb0pBqx+IhDSwZR0HJeUmbu9T7s16RYCTecz+eEkVu0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761806232; c=relaxed/simple; bh=z6RMcyk5XD0HE6+7NbYB8avXShQxig3SkzJmyzRO5I8=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=kxagzJ5UR+LsVcAQBeQzr9h6CieFCNrnqAb6fZ5vewNVW1LktS/4RkR/cBBJJO/7hliIsTcPuzSitKYHp4Y6RLLFiV/yR+7W28Vp0vgQWa6c7r0ScNbolCFVJHxe/9XKCg963lj+6IDv86MbU5y+hxf9wiv+EyVYCJtnN7/03tY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--willyhuang.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=ojLVIWMn; arc=none smtp.client-ip=209.85.216.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--willyhuang.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ojLVIWMn" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-34029cbe2f5so1758671a91.0 for ; Wed, 29 Oct 2025 23:37:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761806230; x=1762411030; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=MoYlSypTMFSr6JglkBvey7GxaEYRPECj/uuYV5+iM1E=; b=ojLVIWMnVhbze87l5K+Dc1z7HDAK3y/Oj4O2KD35TzcgA3eFmHRM+JU6wajxgz6D+n v3Jfle6FpzwWqjxDb7piMxyXDig+rCR7zQSiHKkznyfXefvkQXSfl/qCTdDdWH7vnyZ1 oLrIQwYS/+Yc2acKrAFzRlaoM+EVOwl6tmFcjr84cH8CAAs0F6LODDk5VWR+jQafvXy6 jY8KbB7GDltE2s7WP6FbvbFZk9/H+f/J7sZzro3UdmAECz75/KUwQFnvsHo6IgiJTzpH ECUqS2DMJSjBZVZsy3Hm0hXjrT0RmTB/Ta5lSVi0Hs96MdnEoIJB/RsaoWmcAGeypwtx esUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761806230; x=1762411030; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=MoYlSypTMFSr6JglkBvey7GxaEYRPECj/uuYV5+iM1E=; b=DuPZBNIp65zL6ERxPlqLBCns6nVwof3nSGH98A0ok2St2Npw1Epw5jERDzFg/Y8idd V5CUUIOuiH7Q4O4uUFh4VaudgSVWoSfAke9t0UPDhqDGQZoZ7LhCGYSpwAvGHNB6eYHn /ZOJ1C3SB0YvvPIjLUACoFRzoK+yopf+9PHkEej8ftF2Z7FhSqqAFrGxjewwd6o4Solw IFSzg42aZWh9XsVDMmci3y5ei7stKo3E346o2KPQJIRChePsgxYwatnMBCX/yZmRR0oa k2m4yUhz+Ij6hWwqJsPFwSnB+ng5p2wH9uDXu0j2n2X1Jx8DK5A54GFNL2FP6GBiMGCv zZwg== X-Forwarded-Encrypted: i=1; AJvYcCV3kuRLJcmYmAEVvgNIE9it8zAhORr5JIVKhgWvpdshgpqE4OMS+cpkwEthFle6P9zG8tm3kwTG+FScXk4=@vger.kernel.org X-Gm-Message-State: AOJu0YyY7DP96CvCgluQshPvtuU5Bq3D5nSPm+Rasb3d+KiXrx2ew7i8 dCX+/EkGAkg/Fz8Zag/CFzcOObBcYbfYLRW0sZviStzsue6jggR3tv9obzJvbhEvbrSduTJplB+ 7hkDJBpLxJoB0mm2ynbVXfg== X-Google-Smtp-Source: AGHT+IHAGgw5s3hEmyfwxh0QyF6n/uwNh5Ln8ayUug972f15fOZ2MS+UtAFmFMuPISJpw6fLDTKNs63Tda82X+gP X-Received: from pjlm20.prod.google.com ([2002:a17:90a:7f94:b0:33e:32fc:fc4f]) (user=willyhuang job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:5108:b0:31e:cc6b:320f with SMTP id 98e67ed59e1d1-3404c3e456amr2241897a91.5.1761806229967; Wed, 29 Oct 2025 23:37:09 -0700 (PDT) Date: Thu, 30 Oct 2025 14:37:04 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.51.1.851.g4ebd6896fd-goog Message-ID: <20251030063704.903998-1-willyhuang@google.com> Subject: [PATCH] HID: nintendo: Reduce JC_SUBCMD_RATE_MAX_ATTEMPTS From: Willy Huang To: "Daniel J . Ogorchock" , Jiri Kosina , Benjamin Tissoires Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Willy Huang Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The JC_SUBCMD_RATE_MAX_ATTEMPTS constant is currently set to 500.=20 In a worst-case scenario where all attempts consistently fail, this could cause the loop to block for up to 60000 ms (500 * 60ms * 2, including the=20 additional retry after a timeout). This change lowers the maximum potential blocking time to 3000 ms=20 (25 * 60ms * 2), improving system responsiveness and efficiency. Signed-off-by: Willy Huang Reviewed-by: Daniel J. Ogorchock --- drivers/hid/hid-nintendo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c index c2849a541f65..342cd6893502 100644 --- a/drivers/hid/hid-nintendo.c +++ b/drivers/hid/hid-nintendo.c @@ -819,7 +819,7 @@ static void joycon_wait_for_input_report(struct joycon_= ctlr *ctlr) #define JC_INPUT_REPORT_MAX_DELTA 17 #define JC_SUBCMD_TX_OFFSET_MS 4 #define JC_SUBCMD_VALID_DELTA_REQ 3 -#define JC_SUBCMD_RATE_MAX_ATTEMPTS 500 +#define JC_SUBCMD_RATE_MAX_ATTEMPTS 25 #define JC_SUBCMD_RATE_LIMITER_USB_MS 20 #define JC_SUBCMD_RATE_LIMITER_BT_MS 60 #define JC_SUBCMD_RATE_LIMITER_MS(ctlr) ((ctlr)->hdev->bus =3D=3D BUS_USB = ? JC_SUBCMD_RATE_LIMITER_USB_MS : JC_SUBCMD_RATE_LIMITER_BT_MS) --=20 2.51.1.851.g4ebd6896fd-goog