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The printf statement attempts to print the DMA direction string using the syntax 'dir[directions]', which is an invalid array access. The variable 'dir' is an integer, and 'directions' is a char pointer array. This incorrect syntax should be 'directions[dir]', using 'dir' as the index into the 'directions' array. Fix this by correcting the array access from 'dir[directions]' to 'directions[dir]'. Link: https://lore.kernel.org/r/20251104025234.2363-1-zhangchujun@cmss.chinamobile.com Signed-off-by: Zhang Chujun <zhangchujun@cmss.chinamobile.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>