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@@ -1,11 +1,17 @@
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--- a/drivers/net/wireless/ath/main.c
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+++ b/drivers/net/wireless/ath/main.c
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-@@ -43,7 +43,7 @@ struct sk_buff *ath_rxbuf_alloc(struct a
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- * Unfortunately this means we may get 8 KB here from the
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- * kernel... and that is actually what is observed on some
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- * systems :( */
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-- skb = __dev_alloc_skb(len + common->cachelsz - 1, gfp_mask);
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-+ skb = __dev_alloc_skb(len + common->cachelsz - 1, gfp_mask | GFP_DMA);
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- if (skb != NULL) {
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- off = ((unsigned long) skb->data) % common->cachelsz;
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- if (off != 0)
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+@@ -31,6 +31,14 @@ struct sk_buff *ath_rxbuf_alloc(struct a
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+ u32 off;
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+
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+ /*
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++ * Enable GFP_DMA in order to avoid using DMA bounce buffers
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++ * on IXP4xx devices with more than 64M RAM
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++ */
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++#ifdef CONFIG_ARCH_IXP4XX
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++ gfp_mask |= GFP_DMA;
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++#endif
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++
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++ /*
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+ * Cache-line-align. This is important (for the
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+ * 5210 at least) as not doing so causes bogus data
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+ * in rx'd frames.
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Felix Fietkau