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From: Denis Orlov <denorl2009@gmail.com>
To: barebox@lists.infradead.org
Cc: Denis Orlov <denorl2009@gmail.com>
Subject: [PATCH 04/16] ata: ahci: simplify fis structure creation
Date: Wed,  4 May 2022 12:25:41 +0300	[thread overview]
Message-ID: <20220504092553.27961-4-denorl2009@gmail.com> (raw)
In-Reply-To: <20220504092553.27961-1-denorl2009@gmail.com>

Signed-off-by: Denis Orlov <denorl2009@gmail.com>
---
 drivers/ata/ahci.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 5aab81fcef..026f83046c 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -192,14 +192,12 @@ static int ahci_io(struct ahci_port *ahci_port, u8 *fis, int fis_len, void *rbuf
 static int ahci_read_id(struct ata_port *ata, void *buf)
 {
 	struct ahci_port *ahci = container_of(ata, struct ahci_port, ata);
-	u8 fis[20];
-
-	memset(fis, 0, sizeof(fis));
 
-	/* Construct the FIS */
-	fis[0] = 0x27;			/* Host to device FIS. */
-	fis[1] = 1 << 7;		/* Command FIS. */
-	fis[2] = ATA_CMD_ID_ATA;	/* Command byte. */
+	u8 fis[20] = {
+		0x27,			/* Host to device FIS. */
+		1 << 7,			/* Command FIS. */
+		ATA_CMD_ID_ATA		/* Command byte. */
+	};
 
 	return ahci_io(ahci, fis, sizeof(fis), buf, NULL, SECTOR_SIZE);
 }
@@ -208,16 +206,13 @@ static int ahci_rw(struct ata_port *ata, void *rbuf, const void *wbuf,
 		sector_t block, blkcnt_t num_blocks)
 {
 	struct ahci_port *ahci = container_of(ata, struct ahci_port, ata);
-	u8 fis[20];
+	u8 fis[20] = {
+		0x27,			/* Host to device FIS. */
+		1 << 7			/* Command FIS. */
+	};
 	int ret;
 	int lba48 = ata_id_has_lba48(ata->id);
 
-	memset(fis, 0, sizeof(fis));
-
-	/* Construct the FIS */
-	fis[0] = 0x27;			/* Host to device FIS. */
-	fis[1] = 1 << 7;		/* Command FIS. */
-
 	/* Command byte. */
 	if (lba48)
 		fis[2] = wbuf ? ATA_CMD_WRITE_EXT : ATA_CMD_READ_EXT;
-- 
2.20.1


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  parent reply	other threads:[~2022-05-04  9:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-04  9:25 [PATCH 01/16] ata: ahci: use abstract read/write functions uniformly Denis Orlov
2022-05-04  9:25 ` [PATCH 02/16] ata: ahci: replace magic numbers with named constants Denis Orlov
2022-05-04  9:25 ` [PATCH 03/16] ata: ahci: fix missing whitespace in ahci_add_host() Denis Orlov
2022-05-04  9:25 ` Denis Orlov [this message]
2022-05-04  9:25 ` [PATCH 05/16] ata: ahci: do not ignore dma handles Denis Orlov
2022-05-04  9:25 ` [PATCH 06/16] ata: ahci: adjust debug messages in ahci_init_port() Denis Orlov
2022-05-04  9:25 ` [PATCH 07/16] ata: ahci: correct named constants values and names Denis Orlov
2022-05-04  9:25 ` [PATCH 08/16] ata: ahci: properly fill scatter/gather table Denis Orlov
2022-05-04  9:25 ` [PATCH 09/16] ata: ahci: use named constants for capabilities bits Denis Orlov
2022-05-04  9:25 ` [PATCH 10/16] ata: ahci: map buffers properly Denis Orlov
2022-05-04  9:25 ` [PATCH 11/16] ata: ahci: use 64-bit addressing if available Denis Orlov
2022-05-04  9:25 ` [PATCH 12/16] ata: ahci: make rx_fis field in ahci_port of type void* Denis Orlov
2022-05-04  9:25 ` [PATCH 13/16] ata: ahci: add missing capability in ahci_print_info() Denis Orlov
2022-05-04  9:25 ` [PATCH 14/16] ata: ahci: remove redundant cast in ahci_io() Denis Orlov
2022-05-04  9:25 ` [PATCH 15/16] ata: ahci: register only implemented ports Denis Orlov
2022-05-04  9:25 ` [PATCH 16/16] ata: ahci: allocate memory in one call in ahci_init_port() Denis Orlov
2022-05-05  7:48 ` [PATCH 01/16] ata: ahci: use abstract read/write functions uniformly Sascha Hauer

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