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From: Christoph Hellwig <hch@lst.de>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Sean Paul <sean@poorly.run>, David Airlie <airlied@linux.ie>,
	Daniel Vetter <daniel@ffwll.ch>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	Ian Abbott <abbotti@mev.co.uk>,
	H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Intel Linux Wireless <linuxwifi@intel.com>,
	linux-arm-kernel@lists.infradead.org (moderated list:ARM PORT),
	dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	linux-rdma@vger.kernel.org, linux-media@vger.kernel.org,
	netdev@vger.kernel.org, linux-wireless@vger.kernel.org,
	linux-s390@vger.kernel.org, devel@driverdev.osuosl.org,
	linux-mm@kvack.org, iommu@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 10/16] iwlwifi: stop passing bogus gfp flags arguments to dma_alloc_coherent
Date: Fri, 14 Jun 2019 15:47:20 +0200
Message-ID: <20190614134726.3827-11-hch@lst.de> (raw)
In-Reply-To: <20190614134726.3827-1-hch@lst.de>

dma_alloc_coherent is not just the page allocator.  The only valid
arguments to pass are either GFP_ATOMIC or GFP_ATOMIC with possible
modifiers of __GFP_NORETRY or __GFP_NOWARN.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/net/wireless/intel/iwlwifi/fw/dbg.c     | 3 +--
 drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
index 5f52e40a2903..323dc5d5ee88 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
@@ -2361,8 +2361,7 @@ iwl_fw_dbg_buffer_allocation(struct iwl_fw_runtime *fwrt, u32 size)
 
 	virtual_addr =
 		dma_alloc_coherent(fwrt->trans->dev, size, &phys_addr,
-				   GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO |
-				   __GFP_COMP);
+				   GFP_KERNEL | __GFP_NOWARN);
 
 	/* TODO: alloc fragments if needed */
 	if (!virtual_addr)
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 803fcbac4152..22a47f928dc8 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -210,8 +210,7 @@ static void iwl_pcie_alloc_fw_monitor_block(struct iwl_trans *trans,
 	for (power = max_power; power >= min_power; power--) {
 		size = BIT(power);
 		cpu_addr = dma_alloc_coherent(trans->dev, size, &phys,
-					      GFP_KERNEL | __GFP_NOWARN |
-					      __GFP_ZERO | __GFP_COMP);
+					      GFP_KERNEL | __GFP_NOWARN);
 		if (!cpu_addr)
 			continue;
 
-- 
2.20.1


  parent reply index

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-14 13:47 use exact allocation for dma coherent memory Christoph Hellwig
2019-06-14 13:47 ` [PATCH 01/16] media: videobuf-dma-contig: use dma_mmap_coherent Christoph Hellwig
2019-06-14 13:47 ` [PATCH 02/16] drm/ati_pcigart: stop using drm_pci_alloc Christoph Hellwig
2019-06-14 13:47 ` [PATCH 03/16] drm/i915: " Christoph Hellwig
2019-06-14 16:45   ` [Intel-gfx] " Ville Syrjälä
2019-06-14 13:47 ` [PATCH 04/16] drm: move drm_pci_{alloc,free} to drm_legacy Christoph Hellwig
2019-06-14 13:47 ` [PATCH 05/16] drm: don't mark pages returned from drm_pci_alloc reserved Christoph Hellwig
2019-06-14 13:47 ` [PATCH 06/16] drm: don't pass __GFP_COMP to dma_alloc_coherent in drm_pci_alloc Christoph Hellwig
2019-06-14 13:47 ` [PATCH 07/16] IB/hfi1: stop passing bogus gfp flags arguments to dma_alloc_coherent Christoph Hellwig
2019-06-14 13:47 ` [PATCH 08/16] IB/qib: " Christoph Hellwig
2019-06-14 13:47 ` [PATCH 09/16] cnic: " Christoph Hellwig
2019-06-14 13:47 ` Christoph Hellwig [this message]
2019-06-14 13:47 ` [PATCH 11/16] s390/ism: " Christoph Hellwig
2019-06-14 13:47 ` [PATCH 12/16] staging/comedi: mark as broken Christoph Hellwig
2019-06-14 14:02   ` Greg KH
2019-06-14 14:48     ` Christoph Hellwig
2019-06-14 15:30       ` Greg KH
2019-06-14 15:34         ` Christoph Hellwig
2019-06-17 13:15           ` Ian Abbott
2019-06-14 13:47 ` [PATCH 13/16] mm: rename alloc_pages_exact_nid to alloc_pages_exact_node Christoph Hellwig
2019-06-14 13:47 ` [PATCH 14/16] mm: use alloc_pages_exact_node to implement alloc_pages_exact Christoph Hellwig
2019-06-14 13:47 ` [PATCH 15/16] dma-mapping: clear __GFP_COMP in dma_alloc_attrs Christoph Hellwig
2019-06-14 13:47 ` [PATCH 16/16] dma-mapping: use exact allocation in dma_alloc_contiguous Christoph Hellwig
2019-06-14 14:15   ` David Laight
2019-06-14 14:50     ` Christoph Hellwig
2019-06-14 15:01       ` David Laight
2019-06-14 15:05         ` Christoph Hellwig
2019-06-14 15:05       ` Robin Murphy
2019-06-14 15:08         ` Christoph Hellwig
2019-06-14 15:16         ` David Laight
2019-06-17  8:21 ` use exact allocation for dma coherent memory Dan Carpenter
2019-06-17  8:33   ` Christoph Hellwig
2019-06-19 16:29     ` Jason Gunthorpe
2019-06-20 10:51       ` Christoph Hellwig
2019-07-01  8:48 ` Christoph Hellwig
2019-07-02  9:48   ` Arend Van Spriel
2019-07-08 18:43     ` Christoph Hellwig

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