From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 81FAA1AC422; Thu, 1 Aug 2024 00:35:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722472543; cv=none; b=U45eDIkV4vziOCinoJwkNgeTG9lmYkd0D0zOyvr1vDnyoiaPApv5H0BYV7hoVEruPBIDW2WC+rgKVvavKAAe7I0ep7+tIFK8FMjojhIdmHxxdVua12EO0/M5a9fH1nb3SM2jrwV4oJLtt4yTgvcDE+0WcG7NXDSIUVex1Td8LjQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722472543; c=relaxed/simple; bh=iT35glO44uBzpr8ozZp9u0xNHMswLi8eMbjs4xo50MI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZNgDE5i+erWTMpG9NzHtT78C1Nj5yZsorN5EXUqc7dnIB8feHuhIsy+D3aYHejEDpSk8KAwjeEBJkjLlXlbH3jq2hxjoneyb6HqpMd3pobQRVBnSbvU+yS+qhpeGvC+RjgTobiawpuYVEwfs+4LrNGOt+XgJRPaa2nAkdX3qg+M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YhM345aO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YhM345aO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F976C4AF10; Thu, 1 Aug 2024 00:35:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722472543; bh=iT35glO44uBzpr8ozZp9u0xNHMswLi8eMbjs4xo50MI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YhM345aO4AyO9IpNfXyFmxNDiARoalZyQJ/VohLFSOQQdJIcdVducDNHf2n8pWlNa 3sjEcYRDHRnuBLzou2LNy6lCB7vKDUGyDKmXE0txZlWHPRPdM6EqytYFc9DSWauu/K iF/ACJAGdDl2pFssbFSK/03bt8kA/OYCcgbKlM/mEly2TggQIQbLxslrgz/WZmlx7R lDvuUKwwbFyfOuDizljlzUL7jhs6XYre67jVaxzVFeXruaT5Guv18Avrtm9QfBaauZ Cb1rK/t+eDAxdurQBxb9V/LLlBJzUgDmTW1+9KQ+xq/3g1LOx05/XuU0Dbpqp+n3FV iERWXGWsn8++Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jarkko Nikula , Alexandre Belloni , Sasha Levin , kees@kernel.org, gustavoars@kernel.org, linux-i3c@lists.infradead.org Subject: [PATCH AUTOSEL 5.15 47/47] i3c: mipi-i3c-hci: Error out instead on BUG_ON() in IBI DMA setup Date: Wed, 31 Jul 2024 20:31:37 -0400 Message-ID: <20240801003256.3937416-47-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801003256.3937416-1-sashal@kernel.org> References: <20240801003256.3937416-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.164 Content-Transfer-Encoding: 8bit From: Jarkko Nikula [ Upstream commit 8a2be2f1db268ec735419e53ef04ca039fc027dc ] Definitely condition dma_get_cache_alignment * defined value > 256 during driver initialization is not reason to BUG_ON(). Turn that to graceful error out with -EINVAL. Signed-off-by: Jarkko Nikula Link: https://lore.kernel.org/r/20240628131559.502822-3-jarkko.nikula@linux.intel.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- drivers/i3c/master/mipi-i3c-hci/dma.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c index dd2dc00399600..9df01c15384a5 100644 --- a/drivers/i3c/master/mipi-i3c-hci/dma.c +++ b/drivers/i3c/master/mipi-i3c-hci/dma.c @@ -291,7 +291,10 @@ static int hci_dma_init(struct i3c_hci *hci) rh->ibi_chunk_sz = dma_get_cache_alignment(); rh->ibi_chunk_sz *= IBI_CHUNK_CACHELINES; - BUG_ON(rh->ibi_chunk_sz > 256); + if (rh->ibi_chunk_sz > 256) { + ret = -EINVAL; + goto err_out; + } ibi_status_ring_sz = rh->ibi_status_sz * rh->ibi_status_entries; ibi_data_ring_sz = rh->ibi_chunk_sz * rh->ibi_chunks_total; -- 2.43.0