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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2014-04-14 16:28:37 (GMT)
committerTejun Heo <tj@kernel.org>2014-04-14 17:33:28 (GMT)
commit7a56c0ba266844d7b1964694c47eff2199986e83 (patch)
tree41db43f9c8f5e0c32b299645ffd77d1e46a49895 /drivers/ata
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
downloadlinux-7a56c0ba266844d7b1964694c47eff2199986e83.tar.xz
pata_octeon_cf: use devm_kzalloc() to allocate cf_port
As a nice side effect this fixes the cf_port leak on dma_coerce_mask_and_coherent() or ata_host_activate() failure. Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Daney <david.daney@cavium.com> Suggested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/pata_octeon_cf.c50
1 files changed, 17 insertions, 33 deletions
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index 83c4ddb..2a97d3a 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -865,7 +865,7 @@ static int octeon_cf_probe(struct platform_device *pdev)
if (node == NULL)
return -EINVAL;
- cf_port = kzalloc(sizeof(*cf_port), GFP_KERNEL);
+ cf_port = devm_kzalloc(&pdev->dev, sizeof(*cf_port), GFP_KERNEL);
if (!cf_port)
return -ENOMEM;
@@ -881,10 +881,9 @@ static int octeon_cf_probe(struct platform_device *pdev)
n_size = of_n_size_cells(node);
reg_prop = of_find_property(node, "reg", &reg_len);
- if (!reg_prop || reg_len < sizeof(__be32)) {
- rv = -EINVAL;
- goto free_cf_port;
- }
+ if (!reg_prop || reg_len < sizeof(__be32))
+ return -EINVAL;
+
cs_num = reg_prop->value;
cf_port->cs0 = be32_to_cpup(cs_num);
@@ -901,16 +900,13 @@ static int octeon_cf_probe(struct platform_device *pdev)
res_dma = platform_get_resource(dma_dev, IORESOURCE_MEM, 0);
if (!res_dma) {
of_node_put(dma_node);
- rv = -EINVAL;
- goto free_cf_port;
+ return -EINVAL;
}
cf_port->dma_base = (u64)devm_ioremap_nocache(&pdev->dev, res_dma->start,
resource_size(res_dma));
-
if (!cf_port->dma_base) {
of_node_put(dma_node);
- rv = -EINVAL;
- goto free_cf_port;
+ return -EINVAL;
}
irq_handler = octeon_cf_interrupt;
@@ -921,41 +917,34 @@ static int octeon_cf_probe(struct platform_device *pdev)
of_node_put(dma_node);
}
res_cs1 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!res_cs1) {
- rv = -EINVAL;
- goto free_cf_port;
- }
+ if (!res_cs1)
+ return -EINVAL;
+
cs1 = devm_ioremap_nocache(&pdev->dev, res_cs1->start,
resource_size(res_cs1));
-
if (!cs1)
- goto free_cf_port;
+ return rv;
+
+ if (reg_len < (n_addr + n_size + 1) * sizeof(__be32))
+ return -EINVAL;
- if (reg_len < (n_addr + n_size + 1) * sizeof(__be32)) {
- rv = -EINVAL;
- goto free_cf_port;
- }
cs_num += n_addr + n_size;
cf_port->cs1 = be32_to_cpup(cs_num);
}
res_cs0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
- if (!res_cs0) {
- rv = -EINVAL;
- goto free_cf_port;
- }
+ if (!res_cs0)
+ return -EINVAL;
cs0 = devm_ioremap_nocache(&pdev->dev, res_cs0->start,
resource_size(res_cs0));
-
if (!cs0)
- goto free_cf_port;
+ return rv;
/* allocate host */
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
- goto free_cf_port;
+ return rv;
ap = host->ports[0];
ap->private_data = cf_port;
@@ -1020,17 +1009,12 @@ static int octeon_cf_probe(struct platform_device *pdev)
ata_port_desc(ap, "cmd %p ctl %p", base, ap->ioaddr.ctl_addr);
-
dev_info(&pdev->dev, "version " DRV_VERSION" %d bit%s.\n",
is_16bit ? 16 : 8,
cf_port->is_true_ide ? ", True IDE" : "");
return ata_host_activate(host, irq, irq_handler,
IRQF_SHARED, &octeon_cf_sht);
-
-free_cf_port:
- kfree(cf_port);
- return rv;
}
static void octeon_cf_shutdown(struct device *dev)