Hello Mark A. Greer,
This is a semi-automatic email about new static checker warnings.
The patch dfd061d5a8f5: "crypto: omap-sham - Add code to use
dmaengine API" from Dec 21, 2012, leads to the following Smatch
complaint:
drivers/crypto/omap-sham.c:1973 omap_sham_probe()
error: we previously assumed 'dd->dma_lch' could be null (see line
1934)
drivers/crypto/omap-sham.c
1931
1932 dd->dma_lch = dma_request_slave_channel_compat(mask,
omap_dma_filter_fn,
1933 &dd->dma, dev,
"rx");
1934 if (!dd->dma_lch) {
^^^^^^^^^^^
New check.
1935 dd->polling_mode = 1;
1936 dev_dbg(dev, "using polling mode instead of dma\n");
1937 }
1938
[snip]
1964
1965 return 0;
1966
1967 err_algs:
1968 for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
1969 for (j = dd->pdata->algs_info[i].registered - 1; j >=
0; j--)
1970 crypto_unregister_ahash(
1971
&dd->pdata->algs_info[i].algs_list[j]);
1972 pm_runtime_disable(dev);
1973 dma_release_channel(dd->dma_lch);
^^^^^^^^^^^
New unchecked dereference.
1974 data_err:
1975 dev_err(dev, "initialization failed.\n");
regards,
dan carpenter
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