[PATCH AUTOSEL 3.18 41/98] fbdev/broadsheetfb: fix memory leak

Sasha Levin
2018-10-25T14:17:56Z

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit ef6899cdc8608e2f018e590683f04bb04a069704 ]

static code analysis from cppcheck reports:

[drivers/video/fbdev/broadsheetfb.c:673]:
(error) Memory leak: sector_buffer

sector_buffer is not being kfree'd on each call to
broadsheet_spiflash_rewrite_sector(), so free it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/video/fbdev/broadsheetfb.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/broadsheetfb.c b/drivers/video/fbdev/broadsheetfb.c
index 8556264b16b7..235542f42da9 100644
--- a/drivers/video/fbdev/broadsheetfb.c
+++ b/drivers/video/fbdev/broadsheetfb.c
@@ -636,7 +636,7 @@ static int broadsheet_spiflash_rewrite_sector(struct broadsheetfb_par *par,
err = broadsheet_spiflash_read_range(par, start_sector_addr,
data_start_addr, sector_buffer);
if (err)
- return err;
+ goto out;
}

/* now we copy our data into the right place in the sector buffer */
@@ -657,7 +657,7 @@ static int broadsheet_spiflash_rewrite_sector(struct broadsheetfb_par *par,
err = broadsheet_spiflash_read_range(par, tail_start_addr,
tail_len, sector_buffer + tail_start_addr);
if (err)
- return err;
+ goto out;
}

/* if we got here we have the full sector that we want to rewrite. */
@@ -665,11 +665,13 @@ static int broadsheet_spiflash_rewrite_sector(struct broadsheetfb_par *par,
/* first erase the sector */
err = broadsheet_spiflash_erase_sector(par, start_sector_addr);
if (err)
- return err;
+ goto out;

/* now write it */
err = broadsheet_spiflash_write_sector(par, start_sector_addr,
sector_buffer, sector_size);
+out:
+ kfree(sector_buffer);
return err;
}

--
2.17.1