discard_support 240 drivers/mmc/core/sd.c u8 discard_support; discard_support 290 drivers/mmc/core/sd.c discard_support = UNSTUFF_BITS(resp, 313 - 288, 1); discard_support 291 drivers/mmc/core/sd.c card->erase_arg = (card->scr.sda_specx && discard_support) ?