[PATCH 5.9 211/757] wilc1000: Fix memleak in wilc_bus_probe

Greg Kroah-Hartman
2020-10-27T15:58:42Z

From: Dinghao Liu <dinghao.liu@zju.edu.cn>

[ Upstream commit 9a19a939abfa7d949f584a7ad872e683473fdc14 ]

When devm_clk_get() returns -EPROBE_DEFER, spi_priv
should be freed just like when wilc_cfg80211_init()
fails.

Fixes: 854d66df74aed ("staging: wilc1000: look for rtc_clk clock in spi mode")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Acked-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200820055256.24333-1-dinghao.liu@zju.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/microchip/wilc1000/spi.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 3f19e3f38a397..a18dac0aa6b67 100644
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c
@@ -112,9 +112,10 @@ static int wilc_bus_probe(struct spi_device *spi)
wilc->dev_irq_num = spi->irq;

wilc->rtc_clk = devm_clk_get(&spi->dev, "rtc_clk");
- if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER)
+ if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER) {
+ kfree(spi_priv);
return -EPROBE_DEFER;
- else if (!IS_ERR(wilc->rtc_clk))
+ } else if (!IS_ERR(wilc->rtc_clk))
clk_prepare_enable(wilc->rtc_clk);

return 0;
--
2.25.1