From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) (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 652FD238178 for ; Mon, 27 Apr 2026 16:33:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777307590; cv=none; b=J5P3J0g2ZyHmN2na+kZNT8OxRKeFqDPOqANdHbrwVzzDjLMSuYgoVhlast49WA3DcY/IzWf3nUKfJ57cajvVnwFf8q1o5B66qa1g3533KhcXA3bRI1hqPu+RX4TH27Uf6IlsZ0CPmSFGqRoKhuD46rb8wfJLntAUtaplwz4An7c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777307590; c=relaxed/simple; bh=8W6ejA4JywJSSKQL7Q25kMUHMTPo2Ypf1rOgcW6fZAM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=Q7jY5ekxvOCBdwz5Ex2NWpn7qRhP88SOXAII/ph/R+OsiMtP0RbQ8SpzyMomGCOwymWruYgUL74GKovsAhUNQHt9UyPyhLGi6GpFbHqu0NwTlcEdDf5iHDJaxrB2Q3eLEJSysOdLWc9IylZKn4QbPkFHQTYPdUkmDkJGL1Talus= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=FlZu9sWr; arc=none smtp.client-ip=209.85.214.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FlZu9sWr" Received: by mail-pl1-f171.google.com with SMTP id d9443c01a7336-2b461310af5so41256365ad.1 for ; Mon, 27 Apr 2026 09:33:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1777307589; x=1777912389; darn=vger.kernel.org; h=cc:to:message-id:content-transfer-encoding:mime-version:subject :date:from:from:to:cc:subject:date:message-id:reply-to; bh=bl/XCw0/NlDvZucl8fmIFkULRBGXTZv9TzNsGmOAeb0=; b=FlZu9sWrSuDN3LNguRXMLlDDmIv9/AIrT5EPAXmsLGP9THBgCsFy9nZqX+OD1CC7BY cqbnuNclOJM3XLuRKfzyi5lNhQxFWT2HwXJeWV8bsEauxXOVMZ7oTPOBTZHXvEroBDGT CWmWEBNawKRPFpOZYw64cf5aPJ39pPUm4ej0QG+YltxZRGv9uikorzWPNgmJ37pahQZt hJ2sj5QR9RkEMgKIR+svrdN4sadRns6/J+b4d2Pa8m/UWsoWtpPfUjNQdkMaCYIC5zfe rmaJvILWuUP+QyZbDohmlz46VqqRbDYGZQpqzVRY0s82XVwRf60vgNui1PsQ2xRSZ4Ga 3jvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777307589; x=1777912389; h=cc:to:message-id:content-transfer-encoding:mime-version:subject :date:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=bl/XCw0/NlDvZucl8fmIFkULRBGXTZv9TzNsGmOAeb0=; b=CFXL32IDQmX+XCXAtSYoMUolh7nYBQYXOFnxb8pxIKCPGGL7A09+xaqPIpbFmmw3OX Lnbo9N5aQDbHTf6l3wm0Js2a3bnKl+pQapRYnohmJb8hKBOUv/TRufnpnjz200Tnngp4 8fKU9Csq4d1mwBj3fBm+bBkiO/1PDOeHYn0FrvU5TFrNAzab+CsYyv9bnOhSs8UTViFl Qc1cOpvCVnFQDJT40EFILPDUN2ehdiNAHp8Oct950O9QsWA2Vtg3+GdyyK2nXKA1Ez3K H5lxInMx2Upihrgcx79FCn54iZlrLzzC0T085jMluzgMbSTP1b12JUZpwDpJ5fUvf+Hw ISog== X-Forwarded-Encrypted: i=1; AFNElJ+uYPmCtConBk5n8pMHPlJP1To8jR01RCHWJfQibmNgg+R8+psrRIVfvYLbgPTtqfT0A6scqv0AHs+OQ6A=@vger.kernel.org X-Gm-Message-State: AOJu0YwHWoBa8KQ9flTDS8MAi5eNWN0haGh/6leD7idPxRMM5tHgJ+TX aHGDSxsZxVoubdXUlb3ceJCO6HCAVoruJVzYB70equnRpSXS2QUX4qW4 X-Gm-Gg: AeBDievGexwIP6RTGY7A4GsqqK6byZMl6P9lhXp3p70Xx7CdurGK0HO1IWsexZNvaKE hUU74KOKw+2m/omvZhpvrf9Wym1hqPP0rn8FT7NoM4tfYAKruXzpioZiSzOJQ+tLo2OARW6tVaq Uo60URGGu5fqnm368IE6MJEVsvhei5N+dPwBTpoehTjXATi8arJ3HgJyQWt6X5j6W8ZcWnfco5j oTuOJAC2SLHGhVXTJJ0AuqY2wKv6Azj1pVQkZldF/rFAo0T9bRI3o8oXUn/bQNBd7gGYotAm81E HP8cIh3DLZKKsGZ7sqYGjjJ7KRX9cWQDRn7HG5lj9z/cMiCTAVp8DaPqxquoE5VTf2WraY7J7MD 6yB7YboT+iViYacD4v5EEwW5kIwOZs+2/7hfCGTL0gnnBCF0T3qCaoCRMeviF10mJ3gMyONtP3g MKu/N3qv2wgh0AT1ZSMJQ5giaEPKgX04gzePvUVgkaQnqaAfhHDTCk0bwUKGV9jxMbm8lAZ42Gb 64icERHCfbBPc2iMOfuikiZ4ZnNsm4= X-Received: by 2002:a17:902:7615:b0:2ae:47b0:dc80 with SMTP id d9443c01a7336-2b5f9df6fc9mr269245635ad.11.1777307588432; Mon, 27 Apr 2026 09:33:08 -0700 (PDT) Received: from junjungu-PC.localdomain ([223.167.147.125]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b5faa174c3sm309346485ad.21.2026.04.27.09.33.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Apr 2026 09:33:08 -0700 (PDT) From: Felix Gu Date: Tue, 28 Apr 2026 00:33:04 +0800 Subject: [PATCH] spi: axiado: replace usleep_range() with udelay() in IRQ path Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260428-axiado-v1-1-cd767500af72@gmail.com> X-B4-Tracking: v=1; b=H4sIAL+P72kC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDEyML3cSKzMSUfF2jJPNUMwNjM9NUy0QloOKCotS0zAqwQdGxtbUAO8K 1G1gAAAA= X-Change-ID: 20260428-axiado-2b7e60365e9a To: Vladimir Moravcevic , Tzu-Hao Wei , Swark Yang , Prasad Bolisetty , Mark Brown , Harshit Shah Cc: linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1777307586; l=1029; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=8W6ejA4JywJSSKQL7Q25kMUHMTPo2Ypf1rOgcW6fZAM=; b=evbJ5bCAUbuUcCQyFS8QvVajCnmBYUG5ma1I9W/857WZuf/FziNv4+AYnXR8V9fsnELVLdqY6 IGVWiI+OvOoBMcaRfQHvbp9q5ibD0wwzHWa++Qh8GbMwiuDKyEsN4CW X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= ax_spi_fill_tx_fifo() can be called from ax_spi_irq() which is a hard irq handler. Replace usleep_range(10, 10) with udelay(10) in atomic context. Fixes: e75a6b00ad79 ("spi: axiado: Add driver for Axiado SPI DB controller") Signed-off-by: Felix Gu --- drivers/spi/spi-axiado.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-axiado.c b/drivers/spi/spi-axiado.c index 9057a0a8df4a..649f149617ce 100644 --- a/drivers/spi/spi-axiado.c +++ b/drivers/spi/spi-axiado.c @@ -201,7 +201,7 @@ static void ax_spi_fill_tx_fifo(struct ax_spi *xspi) * then spi control did't work thoroughly, add one byte delay */ if (ax_spi_read(xspi, AX_SPI_IVR) & AX_SPI_IVR_TFOV) - usleep_range(10, 10); + udelay(10); if (xspi->tx_buf) ax_spi_write_b(xspi, AX_SPI_TXFIFO, *xspi->tx_buf++); else --- base-commit: 7080e32d3f09d8688c4a87d81bdcc71f7f606b16 change-id: 20260428-axiado-2b7e60365e9a Best regards, -- Felix Gu