staging: fbtft: do not allocate huge txbuf

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txbuflen can be set to arbitrary value by user and it is also set
automagically to the maximum transfer size of the SPI master controller.

Do not allocate the buffer when larger than vmem. When my SPI master
controller reports maximum transfer size 16M the probe of fbtft fails.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Michal Suchanek 2016-06-09 15:08:42 +00:00 • committed by Greg Kroah-Hartman

parent d2805d7fff

commit 175f5a4130

1 changed files with 2 additions and 0 deletions

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drivers/staging/fbtft/fbtft-core.c

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