lwIP | embeddedsw/emacps: Backport iteration limit fix (!35)

[Chris Johns (@chris)]

Chris Johns commented on a discussion on embeddedsw/XilinxProcessorIPLib/drivers/emacps/src/xemacps_bdring.c: https://gitlab.rtems.org/rtems/pkg/rtems-lwip/-/merge_requests/35#note_137807

 >  		while (BdCount < BdLimitLoc) {
 >  		/* Read the status */
 >  			if(CurBdPtr != NULL){
 >  		BdStr = XEmacPs_BdRead(CurBdPtr, XEMACPS_BD_STAT_OFFSET);

Using cache coherent memory is a much better solution. The code I had predates support for that type of memory.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/pkg/rtems-lwip/-/merge_requests/35#note_137807
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