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mtd: rawnand: nandsim: Clean error handling

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Many function calls are done this way:

        if ((retval = func()) != 0)
	        return retval;

while we expect in the kernel function calls like:

        retval = func();
	if (retval)
	        return retval;

Apply this change where possible and also use "ret" instead of
"retval" in ns_init_module for consistency, as it is only used in this
function.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200525085851.17682-5-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal 2020-05-25 10:58:38 +02:00
parent 88f9f3e89a
commit 052a7a5374
1 changed files with 27 additions and 19 deletions
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46
drivers/mtd/nand/raw/nandsim.c
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@ -739,7 +739,8 @@ static int __init ns_init(struct mtd_info *mtd)
printk("sector address bytes: %u\n", ns->geom.secaddrbytes);
printk("options: %#x\n", ns->options);
if ((ret = ns_alloc_device(ns)) != 0)
ret = ns_alloc_device(ns);
if (ret)
return ret;
/* Allocate / initialize the internal buffer */
@ -1747,7 +1748,7 @@ static void ns_switch_state(struct nandsim *ns)
NS_DBG("switch_state: operation is unknown, try to find it\n");
if (ns_find_operation(ns, 0) != 0)
if (!ns_find_operation(ns, 0))
return;
if ((ns->state & ACTION_MASK) &&
@ -2243,7 +2244,7 @@ static int __init ns_init_module(void)
{
struct nand_chip *chip;
struct nandsim *ns;
int retval = -ENOMEM, i;
int ret, i;
if (bus_width != 8 && bus_width != 16) {
NS_ERR("wrong bus width (%d), use only 8 or 16\n", bus_width);
@ -2276,7 +2277,7 @@ static int __init ns_init_module(void)
break;
default:
NS_ERR("bbt has to be 0..2\n");
retval = -EINVAL;
ret = -EINVAL;
goto error;
}
/*
@ -2302,21 +2303,24 @@ static int __init ns_init_module(void)
nsmtd->owner = THIS_MODULE;
if ((retval = ns_parse_weakblocks()) != 0)
ret = ns_parse_weakblocks();
if (ret)
goto error;
if ((retval = ns_parse_weakpages()) != 0)
ret = ns_parse_weakpages();
if (ret)
goto error;
if ((retval = ns_parse_gravepages()) != 0)
ret = ns_parse_gravepages();
if (ret)
goto error;
nand_controller_init(&ns->base);
ns->base.ops = &ns_controller_ops;
chip->controller = &ns->base;
retval = nand_scan(chip, 1);
if (retval) {
ret = nand_scan(chip, 1);
if (ret) {
NS_ERR("Could not scan NAND Simulator device\n");
goto error;
}
@ -2330,7 +2334,7 @@ static int __init ns_init_module(void)
if (new_size >> overridesize != nsmtd->erasesize) {
NS_ERR("overridesize is too big\n");
retval = -EINVAL;
ret = -EINVAL;
goto err_exit;
}
@ -2342,25 +2346,29 @@ static int __init ns_init_module(void)
chip->pagemask = (targetsize >> chip->page_shift) - 1;
}
if ((retval = ns_setup_wear_reporting(nsmtd)) != 0)
ret = ns_setup_wear_reporting(nsmtd);
if (ret)
goto err_exit;
if ((retval = ns_init(nsmtd)) != 0)
ret = ns_init(nsmtd);
if (ret)
goto err_exit;
if ((retval = nand_create_bbt(chip)) != 0)
ret = nand_create_bbt(chip);
if (ret)
goto err_exit;
if ((retval = ns_parse_badblocks(ns, nsmtd)) != 0)
ret = ns_parse_badblocks(ns, nsmtd);
if (ret)
goto err_exit;
/* Register NAND partitions */
retval = mtd_device_register(nsmtd, &ns->partitions[0],
ns->nbparts);
if (retval != 0)
ret = mtd_device_register(nsmtd, &ns->partitions[0], ns->nbparts);
if (ret)
goto err_exit;
if ((retval = ns_debugfs_create(ns)) != 0)
ret = ns_debugfs_create(ns);
if (ret)
goto err_exit;
return 0;
@ -2374,7 +2382,7 @@ static int __init ns_init_module(void)
kfree(ns);
ns_free_lists();
return retval;
return ret;
}
module_init(ns_init_module);