[PATCH v3/resubmit 3/3] staging: gs_fpgaboot: return valid error codes

From: Jacob von Chorus
Date: Fri Jul 28 2017 - 17:06:48 EST


The return values on error are modified to be valid error codes. Theses
error codes are propagated back to the init function's return.

Signed-off-by: Jacob von Chorus <jacobvonchorus@xxxxxxxxxx>
---
drivers/staging/gs_fpgaboot/gs_fpgaboot.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/gs_fpgaboot/gs_fpgaboot.c b/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
index ff59708792..bcbdc7340b 100644
--- a/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
+++ b/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
@@ -84,7 +84,7 @@ static int readlength_bitstream(u8 *bitdata, int *lendata, int *offset)
/* make sure it is section 'e' */
if (tbuf[0] != 'e') {
pr_err("error: length section is not 'e', but %c\n", tbuf[0]);
- return -1;
+ return -EINVAL;
}

/* read 4bytes length */
@@ -107,7 +107,7 @@ static int readmagic_bitstream(u8 *bitdata, int *offset)
r = memcmp(buf, bits_magic, 13);
if (r) {
pr_err("error: corrupted header");
- return -1;
+ return -EINVAL;
}
pr_info("bitstream file magic number Ok\n");

@@ -184,7 +184,7 @@ static int gs_read_image(struct fpgaimage *fimage)
break;
default:
pr_err("unsupported fpga image format\n");
- return -1;
+ return -EINVAL;
}

gs_print_header(fimage);
@@ -223,7 +223,7 @@ static int gs_download_image(struct fpgaimage *fimage, enum wbus bus_bytes)
if (!xl_supported_prog_bus_width(bus_bytes)) {
pr_err("unsupported program bus width %d\n",
bus_bytes);
- return -1;
+ return -EINVAL;
}

/* Bring csi_b, rdwr_b Low and program_b High */
@@ -250,7 +250,7 @@ static int gs_download_image(struct fpgaimage *fimage, enum wbus bus_bytes)
/* Check INIT_B */
if (xl_get_init_b() == 0) {
pr_err("init_b 0\n");
- return -1;
+ return -EIO;
}

while (xl_get_done_b() == 0) {
@@ -262,7 +262,7 @@ static int gs_download_image(struct fpgaimage *fimage, enum wbus bus_bytes)

if (cnt > MAX_WAIT_DONE) {
pr_err("fpga download fail\n");
- return -1;
+ return -EIO;
}

pr_info("download fpgaimage\n");
@@ -351,7 +351,7 @@ static int gs_fpgaboot(void)
err_out1:
kfree(fimage);

- return -1;
+ return err;
}

static int __init gs_fpgaboot_init(void)
--
2.11.0