From fa9abe050d0a018b888fce61a4353afab17b0860 Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Thu, 28 Aug 2008 19:13:51 +0200 Subject: [PATCH] b43: Don't use memcpy for overlapping areas It is valid to pass &gphy->rfatt and &gphy->bbatt as rfatt and bbatt pointer arguments to the function. So we have to use memmove for the possibly overlapping memory areas. Signed-off-by: Michael Buesch Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_g.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/b43/phy_g.c b/drivers/net/wireless/b43/phy_g.c index fce84896d34c..063db5c00ce7 100644 --- a/drivers/net/wireless/b43/phy_g.c +++ b/drivers/net/wireless/b43/phy_g.c @@ -232,11 +232,12 @@ void b43_set_txpower_g(struct b43_wldev *dev, if (unlikely(tx_bias == 0xFF)) tx_bias = 0; - /* Save the values for later */ + /* Save the values for later. Use memmove, because it's valid + * to pass &gphy->rfatt as rfatt pointer argument. Same for bbatt. */ gphy->tx_control = tx_control; - memcpy(&gphy->rfatt, rfatt, sizeof(*rfatt)); + memmove(&gphy->rfatt, rfatt, sizeof(*rfatt)); gphy->rfatt.with_padmix = !!(tx_control & B43_TXCTL_TXMIX); - memcpy(&gphy->bbatt, bbatt, sizeof(*bbatt)); + memmove(&gphy->bbatt, bbatt, sizeof(*bbatt)); if (b43_debug(dev, B43_DBG_XMITPOWER)) { b43dbg(dev->wl, "Tuning TX-power to bbatt(%u), " -- 2.30.2