[v.1] spi : spi-fsl :- Error check if cpm_muram_alloc fails and return

[Arvind Yadav]

cpm_muram_alloc can fail so the returned value should be checked.

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 drivers/spi/spi-fsl-cpm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/spi/spi-fsl-cpm.c b/drivers/spi/spi-fsl-cpm.c
index 8f7b26e..1362e2d 100644
--- a/drivers/spi/spi-fsl-cpm.c
+++ b/drivers/spi/spi-fsl-cpm.c
@@ -258,6 +258,9 @@ static unsigned long fsl_spi_cpm_get_pram(struct 
mpc8xxx_spi *mspi)
        /* QE but with a dynamic pram location? */
        if (mspi->flags & SPI_QE) {
                pram_ofs = cpm_muram_alloc(SPI_PRAM_SIZE, 64);
+               if (IS_ERR_VALUE(pram_ofs))
+                       return pram_ofs;
+
                qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, mspi->subblock,
                             QE_CR_PROTOCOL_UNSPECIFIED, pram_ofs);
                return pram_ofs;
@@ -269,9 +272,13 @@ static unsigned long fsl_spi_cpm_get_pram(struct 
mpc8xxx_spi *mspi)
 
        if (mspi->flags & SPI_CPM2) {
                pram_ofs = cpm_muram_alloc(SPI_PRAM_SIZE, 64);
+               if (IS_ERR_VALUE(pram_ofs))
+                       goto error_pram;
+
                out_be16(spi_base, pram_ofs);
        }
 
+error_pram:
        iounmap(spi_base);
        return pram_ofs;
 }
-- 
2.7.4