On 03.09.2013 13:26, Chris Ball wrote:
Hi,

On Tue, Sep 03 2013, Dirk Behme wrote:
+       if ((cmd.opcode == MMC_SWITCH) && ((cmd.arg >> 24) & 0x3)) {
+               /* In case the IOCTL has modified the EXT_CSD, update
it, i.e. re-read the EXT_CSD */
+               mmc_update_ext_csd(card->ext_csd);
+       }
+

Your analysis looks good, please go ahead and submit a full patch.

The issue here is that something like mmc_update_ext_csd() doesn't exist, yet?

So we have to implement a mmc_update_ext_csd() in core/mmc.c and call it from mmc_blk_ioctl_cmd() in card/block.c?

Or any better proposal?

Thanks

Dirk
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