From patchwork Wed Aug 2 16:07:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Antipov X-Patchwork-Id: 710859 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 794C0C001DF for ; Wed, 2 Aug 2023 16:07:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234487AbjHBQHk (ORCPT ); Wed, 2 Aug 2023 12:07:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229962AbjHBQHj (ORCPT ); Wed, 2 Aug 2023 12:07:39 -0400 Received: from forward100a.mail.yandex.net (forward100a.mail.yandex.net [178.154.239.83]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37E521BF0 for ; Wed, 2 Aug 2023 09:07:34 -0700 (PDT) Received: from mail-nwsmtp-smtp-production-main-84.vla.yp-c.yandex.net (mail-nwsmtp-smtp-production-main-84.vla.yp-c.yandex.net [IPv6:2a02:6b8:c0f:26a7:0:640:a2d5:0]) by forward100a.mail.yandex.net (Yandex) with ESMTP id 04CE741C58; Wed, 2 Aug 2023 19:07:32 +0300 (MSK) Received: by mail-nwsmtp-smtp-production-main-84.vla.yp-c.yandex.net (smtp/Yandex) with ESMTPSA id S7VxvrADR8c0-7NLc6HIU; Wed, 02 Aug 2023 19:07:31 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1690992451; bh=wOTQWZ2iJ90DyTBp79FmhzESEXg1Riz91Mf0+lWxZ+U=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=KO9BJ47P+fjdQgwdot2/wlMTzuCpikDXM44ZxEhf80UUKHwHTyWKtaQSDuQFRSJLr mrfeC0tP8vYl0PxYDT3m+Vyyk4Cg5Us3ep4kafiCWWhG2ti+C8C+phX1aKxKIVTYWS FfN8s18GexYbvm0lEh0C5y3/fudcqIljMloOvh4Y= Authentication-Results: mail-nwsmtp-smtp-production-main-84.vla.yp-c.yandex.net; dkim=pass header.i=@yandex.ru From: Dmitry Antipov To: Brian Norris Cc: Kalle Valo , linux-wireless@vger.kernel.org, lvc-project@linuxtesting.org, Dmitry Antipov Subject: [PATCH 4/5] [v3] wifi: mwifiex: handle possible mwifiex_write_reg() errors Date: Wed, 2 Aug 2023 19:07:18 +0300 Message-ID: <20230802160726.85545-4-dmantipov@yandex.ru> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230802160726.85545-1-dmantipov@yandex.ru> References: <20230802160726.85545-1-dmantipov@yandex.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Return -1 on possible 'mwifiex_write_reg()' errors in 'mwifiex_init_sdio_ioport()', do not ignore the value returned by the latter in 'mwifiex_init_sdio()' and 'mwifiex_sdio_up_dev()' as well. Found by Linux Verification Center (linuxtesting.org) with SVACE. Acked-by: Brian Norris Signed-off-by: Dmitry Antipov --- v3: add Acked-by: and reorder series --- drivers/net/wireless/marvell/mwifiex/sdio.c | 22 +++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index a24bd40dd41a..0d60484cd5df 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -1083,17 +1083,17 @@ static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); /* Set Host interrupt reset to read to clear */ - if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) - mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, - reg | card->reg->sdio_int_mask); - else + if (mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) + return -1; + if (mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, + reg | card->reg->sdio_int_mask)) return -1; /* Dnld/Upld ready set to auto reset */ - if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) - mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, - reg | AUTO_RE_ENABLE_INT); - else + if (mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) + return -1; + if (mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, + reg | AUTO_RE_ENABLE_INT)) return -1; return 0; @@ -2525,7 +2525,8 @@ static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); /* Get SDIO ioport */ - mwifiex_init_sdio_ioport(adapter); + if (mwifiex_init_sdio_ioport(adapter)) + return -EIO; /* Initialize SDIO variables in card */ card->mp_rd_bitmap = 0; @@ -3141,7 +3142,8 @@ static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter) */ mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); - mwifiex_init_sdio_ioport(adapter); + if (mwifiex_init_sdio_ioport(adapter)) + dev_err(&card->func->dev, "error enabling SDIO port\n"); } static struct mwifiex_if_ops sdio_ops = {