Dear Wolfgang Denk,
-----Original Message----- From: Wolfgang Denk [mailto:wd@denx.de] Sent: Friday, May 24, 2013 8:33 PM To: Piotr Wilczek Cc: u-boot@lists.denx.de; Kyungmin Park Subject: Re: [U-Boot] [PATCH] drivers:lcd: fix unaligned access on lcd
Dear Piotr Wilczek,
In message 1369381565-13946-1-git-send-email-p.wilczek@samsung.com you wrote:
This patch replace 'le32_to_cpu' function with 'get_unaligend_le32'
to
avoid unaligned access exception on some ARM platforms (ex Trats2).
I think we've been discussng this before, and then decided to rather make sure that there will be no unaligned accesses because the header will be kept properly aligned.
What is your new use case that requires this?
My case is a bmp unzipped to a 4-byte aligned address. The two signature bytes of the bmp header make the other fields 4-byte unaligned. We could force unzip the bmp to an aligned address + 2.
Is this a better solution?
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de "Spock, did you see the looks on their faces?" "Yes, Captain, a sort of vacant contentment."
Best regards, Piotr Wilczek