[PATCH] sb1250-mac: Ensure 16-byte alignment of the descriptor ring. (04115def) · Commits · 戴 / test

drivers/net/sb1250-mac.c

+8 −1

Original line number	Diff line number	Diff line
		@@ -750,7 +750,14 @@ static void sbdma_initctx(sbmacdma_t *d,
		d->sbdma_maxdescr = maxdescr;

		d->sbdma_dscrtable = (sbdmadscr_t *)
		kmalloc(d->sbdma_maxdescr*sizeof(sbdmadscr_t), GFP_KERNEL);
		kmalloc((d->sbdma_maxdescr+1)*sizeof(sbdmadscr_t), GFP_KERNEL);

		/*
		* The descriptor table must be aligned to at least 16 bytes or the
		* MAC will corrupt it.
		*/
		d->sbdma_dscrtable = (sbdmadscr_t *)
		ALIGN((unsigned long)d->sbdma_dscrtable, sizeof(sbdmadscr_t));

		memset(d->sbdma_dscrtable,0,d->sbdma_maxdescr*sizeof(sbdmadscr_t));