commit
9d63f17661e25fd28714dac94bdebc4ff5b75f09 upstream.
There are two bugs in current intel_spi_sw_cycle():
- The 'data byte count' field should be the number of bytes
transferred minus 1
- SSFSTS_CTL is the offset from ispi->sregs, not ispi->base
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
if (ret < 0)
return ret;
- val = (len << SSFSTS_CTL_DBC_SHIFT) | SSFSTS_CTL_DS;
+ val = ((len - 1) << SSFSTS_CTL_DBC_SHIFT) | SSFSTS_CTL_DS;
val |= ret << SSFSTS_CTL_COP_SHIFT;
val |= SSFSTS_CTL_FCERR | SSFSTS_CTL_FDONE;
val |= SSFSTS_CTL_SCGO;
if (ret)
return ret;
- status = readl(ispi->base + SSFSTS_CTL);
+ status = readl(ispi->sregs + SSFSTS_CTL);
if (status & SSFSTS_CTL_FCERR)
return -EIO;
else if (status & SSFSTS_CTL_AEL)