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 D66FD78C75; Mon, 15 Apr 2024 14:28:53 +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=1713191333; cv=none; b=X+LLvTS0GYuTy0Dr6/R1Qj6PQUkvUjMBDb9VuWHizRvZLzvo3b36nE3WHO2baQUjwZIY08ceoLO10HWk+N8PxyDV/DPJG4mDV0eQ/cSR9vPnyUrh43hau1WBcXYqVhHSRevPiG27de9ynxGkn6kze4m7DeYVgNxkNPuGZKlUQzk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713191333; c=relaxed/simple; bh=7tw3wU3GXeDzIFlXyeZGAZmbn2fC0uWW65UnIbuQRLk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qc0WipK7nF2hJF2xPjunZODELghfOriUzDHIz117q8d/Qnxf3P57P6WWwzX+cFY1xUCeazaQtYFp0KUiQT/5xi5WF9vbcdtopfAHvwlZirW4m/le4HMjDmmdrPZPvs+VarSJOK1uby/i3Fpl2txGOcQ9RtpHQIPu22h0iH973ro= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=CpPQD+Nu; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="CpPQD+Nu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59E32C2BD11; Mon, 15 Apr 2024 14:28:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1713191333; bh=7tw3wU3GXeDzIFlXyeZGAZmbn2fC0uWW65UnIbuQRLk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CpPQD+NuHo8KFUM1m3vV+e6XCyMO31nQG8f/Qs+8CZoG8hu2iPJoEhpZ91p/IJhuy da9FSXneY6rg+Dzw/7p1hc718FJf0cwKaVvwH1H9yRnH8jNgwGlCQibIt0ER1oU1VY 2kd8Fg+mc5afsxA6nFwZPkkLWJ2YBvZwxn81f+u0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Gerd Bayer , Paolo Abeni , Sasha Levin Subject: [PATCH 6.8 092/172] Revert "s390/ism: fix receive message buffer allocation" Date: Mon, 15 Apr 2024 16:19:51 +0200 Message-ID: <20240415142003.188614846@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240415141959.976094777@linuxfoundation.org> References: <20240415141959.976094777@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gerd Bayer [ Upstream commit d51dc8dd6ab6f93a894ff8b38d3b8d02c98eb9fb ] This reverts commit 58effa3476536215530c9ec4910ffc981613b413. Review was not finished on this patch. So it's not ready for upstreaming. Signed-off-by: Gerd Bayer Link: https://lore.kernel.org/r/20240409113753.2181368-1-gbayer@linux.ibm.com Fixes: 58effa347653 ("s390/ism: fix receive message buffer allocation") Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/s390/net/ism_drv.c | 38 +++++++++----------------------------- 1 file changed, 9 insertions(+), 29 deletions(-) diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c index affb05521e146..2c8e964425dc3 100644 --- a/drivers/s390/net/ism_drv.c +++ b/drivers/s390/net/ism_drv.c @@ -14,8 +14,6 @@ #include #include #include -#include -#include #include "ism.h" @@ -294,15 +292,13 @@ static int ism_read_local_gid(struct ism_dev *ism) static void ism_free_dmb(struct ism_dev *ism, struct ism_dmb *dmb) { clear_bit(dmb->sba_idx, ism->sba_bitmap); - dma_unmap_page(&ism->pdev->dev, dmb->dma_addr, dmb->dmb_len, - DMA_FROM_DEVICE); - folio_put(virt_to_folio(dmb->cpu_addr)); + dma_free_coherent(&ism->pdev->dev, dmb->dmb_len, + dmb->cpu_addr, dmb->dma_addr); } static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb) { unsigned long bit; - int rc; if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev)) return -EINVAL; @@ -319,30 +315,14 @@ static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb) test_and_set_bit(dmb->sba_idx, ism->sba_bitmap)) return -EINVAL; - dmb->cpu_addr = - folio_address(folio_alloc(GFP_KERNEL | __GFP_NOWARN | - __GFP_NOMEMALLOC | __GFP_NORETRY, - get_order(dmb->dmb_len))); + dmb->cpu_addr = dma_alloc_coherent(&ism->pdev->dev, dmb->dmb_len, + &dmb->dma_addr, + GFP_KERNEL | __GFP_NOWARN | + __GFP_NOMEMALLOC | __GFP_NORETRY); + if (!dmb->cpu_addr) + clear_bit(dmb->sba_idx, ism->sba_bitmap); - if (!dmb->cpu_addr) { - rc = -ENOMEM; - goto out_bit; - } - dmb->dma_addr = dma_map_page(&ism->pdev->dev, - virt_to_page(dmb->cpu_addr), 0, - dmb->dmb_len, DMA_FROM_DEVICE); - if (dma_mapping_error(&ism->pdev->dev, dmb->dma_addr)) { - rc = -ENOMEM; - goto out_free; - } - - return 0; - -out_free: - kfree(dmb->cpu_addr); -out_bit: - clear_bit(dmb->sba_idx, ism->sba_bitmap); - return rc; + return dmb->cpu_addr ? 0 : -ENOMEM; } int ism_register_dmb(struct ism_dev *ism, struct ism_dmb *dmb, -- 2.43.0