On 25 July 2016 at 18:46, Mauro Santos <registo.mailling@xxxxxxxxx> wrote: > Hello, I apologize if this is not the right place to ask but submitting > a bug report to ask a question didn't seem right. > > I have a laptop with a realtek pcie card reader which uses the rtsx_pci > driver and I was wondering if mmc erase command support is not (yet?) > implemented in the driver or if support is missing because the hardware > does not support it. These commands don't require a specific HW feature. but only software support in the driver - which indeed is missing. Although, one should know, the discard/erase feature in the mmc core has since long been poorly implemented. There are a few patches that greatly improves the behaviour and which are queued for 4.8. Would you be interested to test the above changes + plus some additional which I can provide you to enable erase/discard for rtsx_pci? > > Both fstrim and blkdiscard fail with cards (and fs) I know that support > this. > > The card reader on my laptop: > 02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A > PCI Express Card Reader [10ec:522a] (rev 01) > > > Regards, > Mauro Santos Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
