Re: [PATCH v2] vmxnet3: avoid assumption about invalid dma_pa in vmxnet3_set_mc()

From: Alexey Khoroshilov Date: Sat, 15 Oct 2016 00:01:20 +0300 > vmxnet3_set_mc() checks new_table_pa returned by dma_map_single() > with dma_mapping_error(), but even there it assumes zero is invalid pa > (it assumes dma_mapping_error(...,0) returns true if new_table is

[PATCH v2] vmxnet3: avoid assumption about invalid dma_pa in vmxnet3_set_mc()

vmxnet3_set_mc() checks new_table_pa returned by dma_map_single() with dma_mapping_error(), but even there it assumes zero is invalid pa (it assumes dma_mapping_error(...,0) returns true if new_table is NULL). The patch adds an explicit variable to track status of new_table_pa. Found by Linux