linux-kernel - [PATCH] spi: pic32: Retire dma_request_slave_channel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 21 Nov 2019 10:09:54 +0200
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     <broonie@...nel.org>
CC:     <vkoul@...nel.org>, <linux-spi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] spi: pic32: Retire dma_request_slave_channel_compat()

There is no reason to use the dma_request_slave_channel_compat() as no
filter function and parameter is provided.

Switch the driver to use dma_request_chan() instead.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
Hi,

Trying to crack down on the dma_request_slave_channel_compat() in the tree...

Only compile tested!

Regards,
Peter

 drivers/spi/spi-pic32.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/spi/spi-pic32.c b/drivers/spi/spi-pic32.c
index 69f517ec59c6..2f90ca5118af 100644
--- a/drivers/spi/spi-pic32.c
+++ b/drivers/spi/spi-pic32.c
@@ -609,22 +609,18 @@ static void pic32_spi_cleanup(struct spi_device *spi)
 static void pic32_spi_dma_prep(struct pic32_spi *pic32s, struct device *dev)
 {
 	struct spi_master *master = pic32s->master;
-	dma_cap_mask_t mask;
 
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-
-	master->dma_rx = dma_request_slave_channel_compat(mask, NULL, NULL,
-							  dev, "spi-rx");
-	if (!master->dma_rx) {
+	master->dma_rx = dma_request_chan(dev, "spi-rx");
+	if (IS_ERR(master->dma_rx)) {
 		dev_warn(dev, "RX channel not found.\n");
+		master->dma_rx = NULL;
 		goto out_err;
 	}
 
-	master->dma_tx = dma_request_slave_channel_compat(mask, NULL, NULL,
-							  dev, "spi-tx");
-	if (!master->dma_tx) {
+	master->dma_tx = dma_request_chan(dev, "spi-tx");
+	if (IS_ERR(master->dma_tx)) {
 		dev_warn(dev, "TX channel not found.\n");
+		master->dma_tx = NULL;
 		goto out_err;
 	}
 
@@ -637,11 +633,15 @@ static void pic32_spi_dma_prep(struct pic32_spi *pic32s, struct device *dev)
 	return;
 
 out_err:
-	if (master->dma_rx)
+	if (master->dma_rx) {
 		dma_release_channel(master->dma_rx);
+		master->dma_rx = NULL;
+	}
 
-	if (master->dma_tx)
+	if (master->dma_tx) {
 		dma_release_channel(master->dma_tx);
+		master->dma_tx = NULL;
+	}
 }
 
 static void pic32_spi_dma_unprep(struct pic32_spi *pic32s)
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki