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From: | Zhi Hui Li |
Subject: | Re: [Qemu-devel] [PATCH v3] Replace bdrv_* to bdrv_aio_* functions in DMA mode in fdc.c. |
Date: | Tue, 03 Apr 2012 19:53:23 +0800 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.28) Gecko/20120313 Thunderbird/3.1.20 |
I think what you say up is right, I will correct them, thank you very much!
+ bdrv_aio_readv(cur_drv->bs, fd_sector(cur_drv), +&fdctrl->qiov, fdc_sector_num, fdctrl_read_DMA_cb, opaque_cb); + return dma_len;Should be return 0 since we haven't completed I/O yet. Stefan
I think the return value is not used not, so no matter what is returned it not necessary.
if set the dma_len = 0, when call void DMA_set_return(int nret) function will return the real value; :)
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