Hi, I confirm that your patch correct my problem and the bug disappear.
The question is : why (or when) the size equals zero ? Thank you Damien. ---- 2013/2/28 Damien HUANG 黄卫 <damien...@hotmail.com> > Hi, > You received this email, because you had recently experienced fatwrite > issue with uboot. > > The symptom of the problem is at the time of calling fatwrite to write a > block of data to file, the below message would be shown, despite the > message saying "xxxx bytes written" at the end, however, there was not data > being actually stored. > > >* mmc_send_cmd: timedout waiting on cmd inhibit to clear*>* mmc_send_cmd: > >timedout waiting on cmd inhibit to clear*>* mmc_send_cmd: timedout waiting > >on cmd inhibit to clear*>* mmc_send_cmd: timedout waiting on cmd inhibit to > >clear*>* mmc_send_cmd: timedout waiting on cmd inhibit to clear*>* > >mmc_send_cmd: timedout waiting on cmd inhibit to clear*>* mmc_send_cmd: > >timedout waiting on cmd inhibit to clear*>* mmc_send_cmd: timedout waiting > >on cmd inhibit to clear*>* mmc_send_cmd: timedout waiting on cmd inhibit to > >clear*>* mmc_send_cmd: timedout waiting on cmd inhibit to clear*>* > >mmc_send_cmd: timedout waiting on cmd inhibit to clear > *>* 42428 bytes written* > > > After investigation, I believe the problem can be fixed at function > "set_cluster" within file fat_write.c under directory /fs/fat (patch file > was attached). > > The reason of the issue is: If function "set_cluster" was called with size > equals ZERO, then the function would only issue the write instruction to > MMC driver without data, this caused the MMC to be in a wait state for data > and inhibiting further commands. As all subsequent commands to MMC would > first check whether MMC is in inhibit state before actual command being > issued, this check would always fail and time out occur, so the above > message being displayed. > > Cheers, > Damien > > ------------------------------ > From: 1978...@gmail.com > Date: Wed, 27 Feb 2013 09:02:42 +0100 > Subject: Re: [U-Boot] Problems around fatwrite command from uboot > To: damien...@hotmail.com > > Hi Damien, > > I have only patched as I say on : > http://lists.denx.de/pipermail/u-boot/2013-February/147407.html > > I have no more changes for the moment. > > Bye. > > ---- > > 2013/2/27 Damien HUANG 黄卫 <damien...@hotmail.com> > > Hi Jean, > I saw your post in regard to the issue of fatwrite command from uboot. As > I am also experienced with such an error, I am wonder if you got the > problem fixed? If so, please share your success. > Cheers, > Damien > >
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