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habanalabs: Fix memory corruption in debugfs 

This has to be a long instead of a u32 because we write a long value.
On 64 bit systems, this will cause memory corruption.

Fixes: c216477363 ("habanalabs: add debugfs support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Dan Carpenter 2020-08-03 17:36:36 +03:00 committed by Oded Gabbay
parent bc75be24fa
commit eeec23cd32
1 changed files with 4 additions and 4 deletions
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8
drivers/misc/habanalabs/common/debugfs.c
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@ -19,7 +19,7 @@
static struct dentry *hl_debug_root;
static int hl_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr,
u8 i2c_reg, u32 *val)
u8 i2c_reg, long *val)
{
struct armcp_packet pkt;
int rc;
@ -36,7 +36,7 @@ static int hl_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr,
pkt.i2c_reg = i2c_reg;
rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
0, (long *) val);
0, val);
if (rc)
dev_err(hdev->dev, "Failed to read from I2C, error %d\n", rc);
@ -827,7 +827,7 @@ static ssize_t hl_i2c_data_read(struct file *f, char __user *buf,
struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
struct hl_device *hdev = entry->hdev;
char tmp_buf[32];
u32 val;
long val;
ssize_t rc;
if (*ppos)
@ -842,7 +842,7 @@ static ssize_t hl_i2c_data_read(struct file *f, char __user *buf,
return rc;
}
sprintf(tmp_buf, "0x%02x\n", val);
sprintf(tmp_buf, "0x%02lx\n", val);
rc = simple_read_from_buffer(buf, count, ppos, tmp_buf,
strlen(tmp_buf));