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authorGabor Juhos <juhosg@openwrt.org>2013-09-19 18:43:40 +0000
committerGabor Juhos <juhosg@openwrt.org>2013-09-19 18:43:40 +0000
commitceecdfb1c96932e6e4e14c04f73dab323d765c13 (patch)
treedad813920925b81d3d9455404b011bb08b753bd0 /target/linux/ar71xx/files
parentdf8485c7cbfeac5a7006d951899528f0bbc6534e (diff)
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ar71xx: ar934x_nfc: return error code from some low-level functions
Change some flow-level unctions to return with an error code in order to be able to report errors to the core code. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 38068
Diffstat (limited to 'target/linux/ar71xx/files')
-rw-r--r--target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
index b22b3b2da7..1e387e875f 100644
--- a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
+++ b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
@@ -410,7 +410,7 @@ ar934x_nfc_send_cmd(struct ar934x_nfc *nfc, unsigned command)
ar934x_nfc_wait_dev_ready(nfc);
}
-static void
+static int
ar934x_nfc_do_rw_command(struct ar934x_nfc *nfc, int column, int page_addr,
int len, u32 cmd_reg, u32 ctrl_reg, bool write)
{
@@ -475,29 +475,35 @@ retry:
dev_err(nfc->parent, "%s operation failed on page %d\n",
(write) ? "write" : "read", page_addr);
}
+
+ return err;
}
-static void
+static int
ar934x_nfc_send_readid(struct ar934x_nfc *nfc, unsigned command)
{
u32 cmd_reg;
+ int err;
nfc_dbg(nfc, "readid, cmd:%02x\n", command);
cmd_reg = AR934X_NFC_CMD_SEQ_1C1AXR;
cmd_reg |= (command & AR934X_NFC_CMD_CMD0_M) << AR934X_NFC_CMD_CMD0_S;
- ar934x_nfc_do_rw_command(nfc, -1, -1, AR934X_NFC_ID_BUF_SIZE, cmd_reg,
- nfc->ctrl_reg, false);
+ err = ar934x_nfc_do_rw_command(nfc, -1, -1, AR934X_NFC_ID_BUF_SIZE,
+ cmd_reg, nfc->ctrl_reg, false);
nfc_debug_data("[id] ", nfc->buf, AR934X_NFC_ID_BUF_SIZE);
+
+ return err;
}
-static void
+static int
ar934x_nfc_send_read(struct ar934x_nfc *nfc, unsigned command, int column,
int page_addr, int len)
{
u32 cmd_reg;
+ int err;
nfc_dbg(nfc, "read, column=%d page=%d len=%d\n",
column, page_addr, len);
@@ -511,10 +517,12 @@ ar934x_nfc_send_read(struct ar934x_nfc *nfc, unsigned command, int column,
cmd_reg |= AR934X_NFC_CMD_SEQ_1C5A1CXR;
}
- ar934x_nfc_do_rw_command(nfc, column, page_addr, len,
- cmd_reg, nfc->ctrl_reg, false);
+ err = ar934x_nfc_do_rw_command(nfc, column, page_addr, len,
+ cmd_reg, nfc->ctrl_reg, false);
nfc_debug_data("[data] ", nfc->buf, len);
+
+ return err;
}
static void
@@ -555,7 +563,7 @@ ar934x_nfc_send_erase(struct ar934x_nfc *nfc, unsigned command, int column,
ar934x_nfc_wait_dev_ready(nfc);
}
-static void
+static int
ar934x_nfc_send_write(struct ar934x_nfc *nfc, unsigned command, int column,
int page_addr, int len)
{
@@ -570,8 +578,8 @@ ar934x_nfc_send_write(struct ar934x_nfc *nfc, unsigned command, int column,
cmd_reg |= command << AR934X_NFC_CMD_CMD1_S;
cmd_reg |= AR934X_NFC_CMD_SEQ_12;
- ar934x_nfc_do_rw_command(nfc, column, page_addr, len,
- cmd_reg, nfc->ctrl_reg, true);
+ return ar934x_nfc_do_rw_command(nfc, column, page_addr, len,
+ cmd_reg, nfc->ctrl_reg, true);
}
static void