The MALLOC_WILC_BUFFER() macro was using a return statement, and didn't
take care of possible memory leaks and subsequent bugs when it was failing
after succeeding some allocations. This patch corrects this behavior.
Signed-off-by: Raphaël Beamonte <raphael.beamonte@xxxxxxxxx>
---
drivers/staging/wilc1000/wilc_exported_buf.c | 31 +++++++++++++++++++---------
1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/wilc1000/wilc_exported_buf.c b/drivers/staging/wilc1000/wilc_exported_buf.c
index c3f6a0a..ec8d8e5 100644
--- a/drivers/staging/wilc1000/wilc_exported_buf.c
+++ b/drivers/staging/wilc1000/wilc_exported_buf.c
@@ -8,13 +8,6 @@
#define LINUX_TX_SIZE (64 * 1024)
#define WILC1000_FW_SIZE (4 * 1024)
-#define MALLOC_WILC_BUFFER(name, size) \
- exported_ ## name = kmalloc(size, GFP_KERNEL); \
- if (!exported_ ## name) { \
- printk("fail to alloc: %s memory\n", exported_ ## name); \
- return -ENOBUFS; \
- }
-
#define FREE_WILC_BUFFER(name) \
kfree(exported_ ## name);
@@ -49,11 +42,29 @@ static int __init wilc_module_init(void)
/*
* alloc necessary memory
*/
- MALLOC_WILC_BUFFER(g_tx_buf, LINUX_TX_SIZE)
- MALLOC_WILC_BUFFER(g_rx_buf, LINUX_RX_SIZE)
- MALLOC_WILC_BUFFER(g_fw_buf, WILC1000_FW_SIZE)
+ exported_g_tx_buf = kmalloc(LINUX_TX_SIZE, GFP_KERNEL);
+ if (!exported_g_tx_buf)
+ return -ENOMEM;
+
+ exported_g_rx_buf = kmalloc(LINUX_RX_SIZE, GFP_KERNEL);
+ if (!exported_g_rx_buf)
+ goto free_g_tx_buf;
+
+ exported_g_fw_buf = kmalloc(WILC1000_FW_SIZE, GFP_KERNEL);
+ if (!exported_g_fw_buf)
+ goto free_g_rx_buf;
return 0;
+
+free_g_rx_buf:
+ kfree(exported_g_rx_buf);
+ exported_g_rx_buf = NULL;
+
+free_g_tx_buf:
+ kfree(exported_g_tx_buf);
+ exported_g_tx_buf = NULL;
+
+ return -ENOMEM;
}
static void __exit wilc_module_deinit(void)
--
2.1.4
--
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