mtd: spi-nor: stm32-quadspi: fix prefetching outside fsize

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When memory-mapped mode is used, a prefetching mechanism fully
managed by the hardware allows to optimize the read from external
the QSPI memory. A 32-bytes FIFO is used for prefetching.
When the limit of flash size - fifo size is reached the prefetching
mechanism tries to read outside the fsize.
The stm32 quadspi hardware become busy and should be aborted.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Reported-by: Bruno Herrera <bruherrera@gmail.com>
Tested-by: Bruno Herrera <bruherrera@gmail.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>

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Ludovic Barre 2017-10-26 17:12:34 +02:00 • committed by Cyrille Pitchen

parent e812963b91

commit 10cd4b7b74

1 changed files with 11 additions and 1 deletions

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drivers/mtd/spi-nor/stm32-quadspi.c

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