> On 2/25/2012 3:42 PM, Albert ARIBAUD wrote: > > Hi Amit, > > Hello Albert, > > > Le 24/02/2012 12:58, Amit Virdi a écrit : > >> From: Vipin Kumar<vipin.ku...@st.com> > >> > >> Packed attribute is forcing a bytewise write on device registers, > >> there by, resulting in a misbehavior on gcc-4.4.1. > >> Reverting the structures to non-packed > > > > If (just asking, not asserting) the issue is caused by fields being u8 > > where u8 access is not possible, then should you not make the fields u16 > > / u32 according to access requirements? > > The problem is not with the fields being of a different width. AFAIK, > the packed attribute changes the generated code to access even the word > field elements in a byte by byte manner > > Infact, there is a discussion on lkml that I can point > https://lkml.org/lkml/2011/4/27/278 > > It seems that the discussion did not lead to a conclusion but it was > sensible (at least for ARM) to remove the packed attribute from this > structure > What does the USB spec say ? It might be a HW bug?
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